[ERROR] Installing OpenVPN failed with exit code 100

[yansergo]

An error occurs during installation, help me, what can I do?

2026-02-28 12:54:40 [DEBUG] Checking root privileges...
2026-02-28 12:54:40 [DEBUG] Root check passed
2026-02-28 12:54:40 [DEBUG] Checking TUN device availability...
2026-02-28 12:54:40 [DEBUG] TUN device available at /dev/net/tun
2026-02-28 12:54:40 [DEBUG] Detecting operating system...
2026-02-28 12:54:40 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-02-28 12:54:40 === OpenVPN Installer ===
2026-02-28 12:54:40 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-02-28 12:54:40 [PROMPT] I need to ask you a few questions before starting the setup.
2026-02-28 12:54:40 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-02-28 12:54:40 [PROMPT] Detecting server IP addresses...
2026-02-28 12:54:41 [PROMPT] IPv4 address detected: 91.206.92.54
2026-02-28 12:54:41 [PROMPT] IPv6 address detected: 2a00:b700:1::4c
2026-02-28 12:54:41 [PROMPT] What IP version should clients use to connect to this server?
2026-02-28 12:54:46 [PROMPT] Server listening IPv4 address:
2026-02-28 12:54:47 [PROMPT] What IP versions should VPN clients use?
2026-02-28 12:54:47 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-02-28 12:54:57 [PROMPT] IPv4 VPN subnet:
2026-02-28 12:55:00 [PROMPT] What port do you want OpenVPN to listen to?
2026-02-28 12:55:02 [PROMPT] What protocol do you want OpenVPN to use?
2026-02-28 12:55:02 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-02-28 12:55:03 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-02-28 12:55:09 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-02-28 12:55:09 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-02-28 12:55:20 [PROMPT] Do you want to customize the tunnel MTU?
2026-02-28 12:55:23 [PROMPT] Choose the authentication mode:
2026-02-28 12:55:25 [PROMPT] Do you want to customize encryption settings?
2026-02-28 12:55:25 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-02-28 12:55:25 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-02-28 12:55:25 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-02-28 12:55:27 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-02-28 12:55:27 [PROMPT] You will be able to generate a client at the end of the installation.
2026-02-28 12:55:30 === Installing OpenVPN ===
2026-02-28 12:55:30 [INFO] Setting up official OpenVPN repository...
2026-02-28 12:55:30 [CMD] apt-get update
Ign:1 http://deb.debian.org/debian bullseye-backports InRelease
Hit:2 http://deb.debian.org/debian bullseye InRelease
Get:3 http://security.debian.org bullseye-security InRelease [27.2 kB]
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Err:5 http://deb.debian.org/debian bullseye-backports Release
404 Not Found [IP: 2a04:4e42:8e::644 80]
Get:6 http://security.debian.org bullseye-security/main amd64 Packages [449 kB]
Reading package lists...
E: The repository 'http://deb.debian.org/debian bullseye-backports Release' does not have a Release file.
2026-02-28 12:55:38 [ERROR] Update package lists failed with exit code 100
2026-02-28 12:55:38 [FATAL] Update package lists failed
2026-02-28 12:55:38 Script exited with error
2026-02-28 13:12:39 [DEBUG] Checking root privileges...
2026-02-28 13:12:39 [DEBUG] Root check passed
2026-02-28 13:12:39 [DEBUG] Checking TUN device availability...
2026-02-28 13:12:39 [DEBUG] TUN device available at /dev/net/tun
2026-02-28 13:12:39 [DEBUG] Detecting operating system...
2026-02-28 13:12:39 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-02-28 13:12:39 === OpenVPN Installer ===
2026-02-28 13:12:39 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-02-28 13:12:39 [PROMPT] I need to ask you a few questions before starting the setup.
2026-02-28 13:12:39 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-02-28 13:12:39 [PROMPT] Detecting server IP addresses...
2026-02-28 13:12:39 [PROMPT] IPv4 address detected: 91.206.92.54
2026-02-28 13:12:39 [PROMPT] IPv6 address detected: 2a00:b700:1::4c
2026-02-28 13:12:39 [PROMPT] What IP version should clients use to connect to this server?
2026-02-28 13:12:41 [PROMPT] Server listening IPv4 address:
2026-02-28 13:12:42 [PROMPT] What IP versions should VPN clients use?
2026-02-28 13:12:42 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-02-28 13:12:47 [PROMPT] IPv4 VPN subnet:
2026-02-28 13:12:49 [PROMPT] What port do you want OpenVPN to listen to?
2026-02-28 13:12:51 [PROMPT] What protocol do you want OpenVPN to use?
2026-02-28 13:12:51 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-02-28 13:12:52 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-02-28 13:12:57 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-02-28 13:12:57 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-02-28 13:12:58 [PROMPT] Do you want to customize the tunnel MTU?
2026-02-28 13:12:58 [PROMPT] Choose the authentication mode:
2026-02-28 13:12:59 [PROMPT] Do you want to customize encryption settings?
2026-02-28 13:12:59 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-02-28 13:12:59 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-02-28 13:12:59 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-02-28 13:13:00 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-02-28 13:13:00 [PROMPT] You will be able to generate a client at the end of the installation.
2026-02-28 13:13:01 === Installing OpenVPN ===
2026-02-28 13:13:01 [INFO] Setting up official OpenVPN repository...
2026-02-28 13:13:01 [CMD] apt-get update
Ign:1 http://deb.debian.org/debian bullseye-backports InRelease
Hit:2 http://security.debian.org bullseye-security InRelease
Hit:3 http://deb.debian.org/debian bullseye InRelease
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Err:5 http://deb.debian.org/debian bullseye-backports Release
404 Not Found [IP: 2a04:4e42:8e::644 80]
Reading package lists...
E: The repository 'http://deb.debian.org/debian bullseye-backports Release' does not have a Release file.
2026-02-28 13:13:04 [ERROR] Update package lists failed with exit code 100
2026-02-28 13:13:04 [FATAL] Update package lists failed
2026-02-28 13:13:04 Script exited with error
2026-02-28 13:22:31 [DEBUG] Checking root privileges...
2026-02-28 13:22:31 [DEBUG] Root check passed
2026-02-28 13:22:31 [DEBUG] Checking TUN device availability...
2026-02-28 13:22:31 [DEBUG] TUN device available at /dev/net/tun
2026-02-28 13:22:31 [DEBUG] Detecting operating system...
2026-02-28 13:22:31 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-02-28 13:22:31 === OpenVPN Installer ===
2026-02-28 13:22:32 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-02-28 13:22:32 [PROMPT] I need to ask you a few questions before starting the setup.
2026-02-28 13:22:32 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-02-28 13:22:32 [PROMPT] Detecting server IP addresses...
2026-02-28 13:22:32 [PROMPT] IPv4 address detected: 91.206.92.54
2026-02-28 13:22:32 [PROMPT] IPv6 address detected: 2a00:b700:1::4c
2026-02-28 13:22:32 [PROMPT] What IP version should clients use to connect to this server?
2026-02-28 13:24:19 [PROMPT] Server listening IPv4 address:
2026-02-28 13:24:20 [PROMPT] What IP versions should VPN clients use?
2026-02-28 13:24:20 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-02-28 13:24:24 [PROMPT] IPv4 VPN subnet:
2026-02-28 13:24:26 [PROMPT] What port do you want OpenVPN to listen to?
2026-02-28 13:24:27 [PROMPT] What protocol do you want OpenVPN to use?
2026-02-28 13:24:27 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-02-28 13:24:29 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-02-28 13:24:31 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-02-28 13:24:31 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-02-28 13:24:31 [PROMPT] Do you want to customize the tunnel MTU?
2026-02-28 13:24:32 [PROMPT] Choose the authentication mode:
2026-02-28 13:24:33 [PROMPT] Do you want to customize encryption settings?
2026-02-28 13:24:33 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-02-28 13:24:33 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-02-28 13:24:33 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-02-28 13:24:34 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-02-28 13:24:34 [PROMPT] You will be able to generate a client at the end of the installation.
2026-02-28 13:24:34 === Installing OpenVPN ===
2026-02-28 13:24:34 [INFO] Setting up official OpenVPN repository...
2026-02-28 13:24:34 [CMD] apt-get update
Hit:1 http://security.debian.org bullseye-security InRelease
Ign:2 http://deb.debian.org/debian bullseye-backports InRelease
Hit:3 http://deb.debian.org/debian bullseye InRelease
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Err:5 http://deb.debian.org/debian bullseye-backports Release
404 Not Found [IP: 2a04:4e42:8e::644 80]
Reading package lists...
E: The repository 'http://deb.debian.org/debian bullseye-backports Release' does not have a Release file.
2026-02-28 13:24:47 [ERROR] Update package lists failed with exit code 100
2026-02-28 13:24:47 [FATAL] Update package lists failed
2026-02-28 13:24:47 Script exited with error
2026-02-28 13:27:10 [DEBUG] Checking root privileges...
2026-02-28 13:27:10 [DEBUG] Root check passed
2026-02-28 13:27:10 [DEBUG] Checking TUN device availability...
2026-02-28 13:27:10 [DEBUG] TUN device available at /dev/net/tun
2026-02-28 13:27:10 [DEBUG] Detecting operating system...
2026-02-28 13:27:10 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-02-28 13:27:10 === OpenVPN Installer ===
2026-02-28 13:27:10 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-02-28 13:27:10 [PROMPT] I need to ask you a few questions before starting the setup.
2026-02-28 13:27:10 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-02-28 13:27:10 [PROMPT] Detecting server IP addresses...
2026-02-28 13:27:10 [PROMPT] IPv4 address detected: 91.206.92.54
2026-02-28 13:27:10 [PROMPT] No IPv6 address detected
2026-02-28 13:27:10 [PROMPT] What IP version should clients use to connect to this server?
2026-02-28 13:27:11 [PROMPT] Server listening IPv4 address:
2026-02-28 13:27:12 [PROMPT] What IP versions should VPN clients use?
2026-02-28 13:27:12 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-02-28 13:27:14 [PROMPT] IPv4 VPN subnet:
2026-02-28 13:27:15 [PROMPT] What port do you want OpenVPN to listen to?
2026-02-28 13:27:17 [PROMPT] What protocol do you want OpenVPN to use?
2026-02-28 13:27:17 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-02-28 13:27:18 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-02-28 13:27:20 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-02-28 13:27:20 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-02-28 13:27:21 [PROMPT] Do you want to customize the tunnel MTU?
2026-02-28 13:27:22 [PROMPT] Choose the authentication mode:
2026-02-28 13:27:22 [PROMPT] Do you want to customize encryption settings?
2026-02-28 13:27:22 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-02-28 13:27:22 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-02-28 13:27:22 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-02-28 13:27:23 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-02-28 13:27:23 [PROMPT] You will be able to generate a client at the end of the installation.
2026-02-28 13:27:24 === Installing OpenVPN ===
2026-02-28 13:27:24 [INFO] Setting up official OpenVPN repository...
2026-02-28 13:27:24 [CMD] apt-get update
Hit:1 http://security.debian.org bullseye-security InRelease
Ign:2 http://deb.debian.org/debian bullseye-backports InRelease
Hit:3 http://deb.debian.org/debian bullseye InRelease
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Err:5 http://deb.debian.org/debian bullseye-backports Release
404 Not Found [IP: 146.75.122.132 80]
Reading package lists...
E: The repository 'http://deb.debian.org/debian bullseye-backports Release' does not have a Release file.
2026-02-28 13:27:31 [ERROR] Update package lists failed with exit code 100
2026-02-28 13:27:31 [FATAL] Update package lists failed
2026-02-28 13:27:31 Script exited with error
2026-02-28 14:26:01 [DEBUG] Checking root privileges...
2026-02-28 14:26:01 [DEBUG] Root check passed
2026-02-28 14:26:01 [DEBUG] Checking TUN device availability...
2026-02-28 14:26:01 [DEBUG] TUN device available at /dev/net/tun
2026-02-28 14:26:01 [DEBUG] Detecting operating system...
2026-02-28 14:26:01 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-02-28 14:26:01 === OpenVPN Installer ===
2026-02-28 14:26:01 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-02-28 14:26:01 [PROMPT] I need to ask you a few questions before starting the setup.
2026-02-28 14:26:01 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-02-28 14:26:01 [PROMPT] Detecting server IP addresses...
2026-02-28 14:26:01 [PROMPT] IPv4 address detected: 91.206.92.54
2026-02-28 14:26:01 [PROMPT] No IPv6 address detected
2026-02-28 14:26:01 [PROMPT] What IP version should clients use to connect to this server?
2026-02-28 14:26:03 [PROMPT] Server listening IPv4 address:
2026-02-28 14:26:04 [PROMPT] What IP versions should VPN clients use?
2026-02-28 14:26:04 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-02-28 14:26:06 [PROMPT] IPv4 VPN subnet:
2026-02-28 14:26:08 [PROMPT] What port do you want OpenVPN to listen to?
2026-02-28 14:26:09 [PROMPT] What protocol do you want OpenVPN to use?
2026-02-28 14:26:09 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-02-28 14:26:09 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-02-28 14:26:12 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-02-28 14:26:12 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-02-28 14:26:13 [PROMPT] Do you want to customize the tunnel MTU?
2026-02-28 14:26:14 [PROMPT] Choose the authentication mode:
2026-02-28 14:26:15 [PROMPT] Do you want to customize encryption settings?
2026-02-28 14:26:15 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-02-28 14:26:15 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-02-28 14:26:15 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-02-28 14:26:15 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-02-28 14:26:15 [PROMPT] You will be able to generate a client at the end of the installation.
2026-02-28 14:26:17 === Installing OpenVPN ===
2026-02-28 14:26:17 [INFO] Setting up official OpenVPN repository...
2026-02-28 14:26:17 [CMD] apt-get update
Get:1 http://security.debian.org bullseye-security InRelease [27.2 kB]
Hit:2 http://deb.debian.org/debian bullseye InRelease
Hit:3 http://deb.debian.org/debian bullseye-updates InRelease
Fetched 27.2 kB in 5s (5017 B/s)
Reading package lists...
2026-02-28 14:26:23 [DEBUG] Update package lists completed successfully
2026-02-28 14:26:23 [CMD] apt-get install -y ca-certificates curl
Reading package lists...
Building dependency tree...
Reading state information...
ca-certificates is already the newest version (20230311+deb12u1deb11u1).
curl is already the newest version (7.74.0-1.3+deb11u16).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2026-02-28 14:26:24 [DEBUG] Installing prerequisites completed successfully
2026-02-28 14:26:24 [CMD] mkdir -p /etc/apt/keyrings
2026-02-28 14:26:24 [DEBUG] Creating keyrings directory completed successfully
2026-02-28 14:26:24 [CMD] curl -fsSL https://swupdate.openvpn.net/repos/repo-public.gpg -o /etc/apt/keyrings/openvpn-repo-public.asc
2026-02-28 14:26:24 [DEBUG] Downloading OpenVPN GPG key completed successfully
2026-02-28 14:26:24 [INFO] Updating package lists with new repository...
2026-02-28 14:26:24 [CMD] apt-get update
Hit:1 http://security.debian.org bullseye-security InRelease
Hit:2 http://deb.debian.org/debian bullseye InRelease
Hit:3 http://deb.debian.org/debian bullseye-updates InRelease
Get:4 https://build.openvpn.net/debian/openvpn/stable bullseye InRelease [4424 B]
Get:5 https://build.openvpn.net/debian/openvpn/stable bullseye/main amd64 Packages [13.2 kB]
Fetched 17.7 kB in 5s (3640 B/s)
Reading package lists...
2026-02-28 14:26:30 [DEBUG] Update package lists completed successfully
2026-02-28 14:26:30 [INFO] OpenVPN official repository configured
2026-02-28 14:26:30 [INFO] Installing OpenVPN and dependencies...
2026-02-28 14:26:30 [CMD] apt-get install -y openvpn iptables openssl curl ca-certificates tar dnsutils socat
Reading package lists...
Building dependency tree...
Reading state information...
tar is already the newest version (1.34+dfsg-1+deb11u1).
ca-certificates is already the newest version (20230311+deb12u1deb11u1).
curl is already the newest version (7.74.0-1.3+deb11u16).
openssl is already the newest version (1.1.1w-0+deb11u5).
openssl set to manually installed.
The following additional packages will be installed:
bind9-dnsutils bind9-host bind9-libs libfstrm0 libicu67 libip6tc2 liblmdb0
liblzo2-2 libmaxminddb0 libnetfilter-conntrack3 libnfnetlink0 libnftnl11
libnl-3-200 libnl-genl-3-200 libpkcs11-helper1 libprotobuf-c1 libuv1 libxml2
Suggested packages:
firewalld mmdb-bin openvpn-systemd-resolved
Recommended packages:
nftables easy-rsa
The following NEW packages will be installed:
bind9-dnsutils bind9-host bind9-libs dnsutils iptables libfstrm0 libicu67
libip6tc2 liblmdb0 liblzo2-2 libmaxminddb0 libnetfilter-conntrack3
libnfnetlink0 libnftnl11 libnl-3-200 libnl-genl-3-200 libpkcs11-helper1
libprotobuf-c1 libuv1 libxml2 openvpn socat
0 upgraded, 22 newly installed, 0 to remove and 0 not upgraded.
Need to get 13.8 MB of archives.
After this operation, 48.8 MB of additional disk space will be used.
Get:1 http://security.debian.org bullseye-security/main amd64 libicu67 amd64 67.1-7+deb11u1 [8624 kB]
Get:2 http://deb.debian.org/debian bullseye/main amd64 libuv1 amd64 1.40.0-2+deb11u1 [132 kB]
Get:3 http://deb.debian.org/debian bullseye/main amd64 libfstrm0 amd64 0.6.0-1+b1 [21.5 kB]
Get:4 http://deb.debian.org/debian bullseye/main amd64 liblmdb0 amd64 0.9.24-1 [45.0 kB]
Get:5 https://build.openvpn.net/debian/openvpn/stable bullseye/main amd64 openvpn amd64 2.7.0-bullseye1 [668 kB]
Get:6 http://deb.debian.org/debian bullseye/main amd64 libmaxminddb0 amd64 1.5.2-1 [29.8 kB]
Get:7 http://deb.debian.org/debian bullseye/main amd64 libprotobuf-c1 amd64 1.3.3-1+b2 [27.0 kB]
Get:8 http://deb.debian.org/debian bullseye/main amd64 libip6tc2 amd64 1.8.7-1 [35.0 kB]
Get:9 http://deb.debian.org/debian bullseye/main amd64 libnfnetlink0 amd64 1.0.1-3+b1 [13.9 kB]
Get:10 http://deb.debian.org/debian bullseye/main amd64 libnetfilter-conntrack3 amd64 1.0.8-3 [40.6 kB]
Get:11 http://deb.debian.org/debian bullseye/main amd64 libnftnl11 amd64 1.1.9-1 [63.7 kB]
Get:12 http://deb.debian.org/debian bullseye/main amd64 iptables amd64 1.8.7-1 [382 kB]
Get:13 http://deb.debian.org/debian bullseye/main amd64 liblzo2-2 amd64 2.10-2 [56.9 kB]
Get:14 http://deb.debian.org/debian bullseye/main amd64 libnl-3-200 amd64 3.4.0-1+b1 [63.6 kB]
Get:15 http://deb.debian.org/debian bullseye/main amd64 libnl-genl-3-200 amd64 3.4.0-1+b1 [21.2 kB]
Get:16 http://deb.debian.org/debian bullseye/main amd64 libpkcs11-helper1 amd64 1.27-1 [47.5 kB]
Get:17 http://deb.debian.org/debian bullseye/main amd64 socat amd64 1.7.4.1-3 [370 kB]
Get:18 http://security.debian.org bullseye-security/main amd64 libxml2 amd64 2.9.10+dfsg-6.7+deb11u9 [694 kB]
Get:19 http://security.debian.org bullseye-security/main amd64 bind9-libs amd64 1:9.16.50-1deb11u4 [1432 kB]
Get:20 http://security.debian.org bullseye-security/main amd64 bind9-host amd64 1:9.16.50-1deb11u4 [312 kB]
Get:21 http://security.debian.org bullseye-security/main amd64 bind9-dnsutils amd64 1:9.16.50-1deb11u4 [408 kB]
Get:22 http://security.debian.org bullseye-security/main amd64 dnsutils all 1:9.16.50-1deb11u4 [271 kB]
Err:5 https://build.openvpn.net/debian/openvpn/stable bullseye/main amd64 openvpn amd64 2.7.0-bullseye1
Connection timed out [IP: 18.196.214.178 443]
Fetched 13.1 MB in 31s (428 kB/s)
E: Failed to fetch https://build.openvpn.net/debian/openvpn/stable/pool/bullseye/main/o/openvpn/openvpn_2.7.0-bullseye1_amd64.deb Connection timed out [IP: 18.196.214.178 443]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
2026-02-28 14:27:01 [ERROR] Installing OpenVPN failed with exit code 100
2026-02-28 14:27:01 [FATAL] Installing OpenVPN failed
2026-02-28 14:27:01 Script exited with error

[pratikrath126]

Hey! The error does not have a Release file points to the deb.debian.org/debian bullseye-backports entry in your /etc/apt/sources.list. On Debian 11, the backports repository may be missing or the mirror you're using no longer serves it. Try these steps:

1. Edit your sources list:

   sudo nano /etc/apt/sources.list

   Either comment out the line containing bullseye-backports by adding a # at the start, or replace the mirror with one that has backports (e.g., deb http://deb.debian.org/debian bullseye-backports main).

2. Update package lists:

   sudo apt-get update

   The 404 Not Found should be gone.

3. Retry the OpenVPN installer. The earlier failure was during apt-get update. After fixing the sources, run the installer again.

If the connection to build.openvpn.net times out again, it might be a transient network hiccup. You can also manually install OpenVPN from Debian's default repos (though it may be an older version):

sudo apt-get install openvpn

Let me know if you hit another error!

[yansergo]

The problem hasn't been solved; this script doesn't work out of the box.

2026-03-01 06:31:43 [DEBUG] Checking root privileges...
2026-03-01 06:31:43 [DEBUG] Root check passed
2026-03-01 06:31:43 [DEBUG] Checking TUN device availability...
2026-03-01 06:31:43 [DEBUG] TUN device available at /dev/net/tun
2026-03-01 06:31:43 [DEBUG] Detecting operating system...
2026-03-01 06:31:43 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-03-01 06:31:43 === OpenVPN Installer ===
2026-03-01 06:31:43 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-03-01 06:31:43 [PROMPT] I need to ask you a few questions before starting the setup.
2026-03-01 06:31:43 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-03-01 06:31:43 [PROMPT] Detecting server IP addresses...
2026-03-01 06:31:43 [PROMPT] IPv4 address detected: 91.206.92.54
2026-03-01 06:31:43 [PROMPT] No IPv6 address detected
2026-03-01 06:31:43 [PROMPT] What IP version should clients use to connect to this server?
2026-03-01 06:31:45 [PROMPT] Server listening IPv4 address:
2026-03-01 06:31:47 [PROMPT] What IP versions should VPN clients use?
2026-03-01 06:31:47 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-03-01 06:31:49 [PROMPT] IPv4 VPN subnet:
2026-03-01 06:31:50 [PROMPT] What port do you want OpenVPN to listen to?
2026-03-01 06:31:51 [PROMPT] What protocol do you want OpenVPN to use?
2026-03-01 06:31:51 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-03-01 06:31:52 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-03-01 06:31:54 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-03-01 06:31:54 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-03-01 06:31:56 [PROMPT] Do you want to customize the tunnel MTU?
2026-03-01 06:31:57 [PROMPT] Choose the authentication mode:
2026-03-01 06:31:58 [PROMPT] Do you want to customize encryption settings?
2026-03-01 06:31:58 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-03-01 06:31:58 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-03-01 06:31:58 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-03-01 06:31:59 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-03-01 06:31:59 [PROMPT] You will be able to generate a client at the end of the installation.
2026-03-01 06:31:59 === Installing OpenVPN ===
2026-03-01 06:31:59 [INFO] Setting up official OpenVPN repository...
2026-03-01 06:31:59 [CMD] apt-get update
Ign:1 http://deb.debian.org/debian bullseye-backports InRelease
Hit:2 http://security.debian.org bullseye-security InRelease
Hit:3 http://deb.debian.org/debian bullseye InRelease
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Err:5 http://deb.debian.org/debian bullseye-backports Release
404 Not Found [IP: 146.75.122.132 80]
Hit:6 https://build.openvpn.net/debian/openvpn/stable bullseye InRelease
Reading package lists...
E: The repository 'http://deb.debian.org/debian bullseye-backports Release' does not have a Release file.
2026-03-01 06:32:01 [ERROR] Update package lists failed with exit code 100
2026-03-01 06:32:01 [FATAL] Update package lists failed
2026-03-01 06:32:01 Script exited with error

[yansergo]

Even after manually installing sudo apt-get install openvpn and re-running the script, the error persists.

026-03-01 06:34:56 [DEBUG] Checking root privileges...
2026-03-01 06:34:56 [DEBUG] Root check passed
2026-03-01 06:34:56 [DEBUG] Checking TUN device availability...
2026-03-01 06:34:56 [DEBUG] TUN device available at /dev/net/tun
2026-03-01 06:34:56 [DEBUG] Detecting operating system...
2026-03-01 06:34:56 [DEBUG] Detected OS: debian (Debian GNU/Linux 11 (bullseye))
2026-03-01 06:34:56 === OpenVPN Installer ===
2026-03-01 06:34:56 [PROMPT] The git repository is available at: https://github.com/angristan/openvpn-install
2026-03-01 06:34:56 [PROMPT] I need to ask you a few questions before starting the setup.
2026-03-01 06:34:56 [PROMPT] You can leave the default options and just press enter if you are okay with them.
2026-03-01 06:34:56 [PROMPT] Detecting server IP addresses...
2026-03-01 06:34:56 [PROMPT] IPv4 address detected: 91.206.92.54
2026-03-01 06:34:56 [PROMPT] No IPv6 address detected
2026-03-01 06:34:56 [PROMPT] What IP version should clients use to connect to this server?
2026-03-01 06:34:57 [PROMPT] Server listening IPv4 address:
2026-03-01 06:34:58 [PROMPT] What IP versions should VPN clients use?
2026-03-01 06:34:58 [PROMPT] This determines both their VPN addresses and internet access through the tunnel.
2026-03-01 06:34:59 [PROMPT] IPv4 VPN subnet:
2026-03-01 06:35:00 [PROMPT] What port do you want OpenVPN to listen to?
2026-03-01 06:35:01 [PROMPT] What protocol do you want OpenVPN to use?
2026-03-01 06:35:01 [PROMPT] UDP is faster. Unless it is not available, you shouldn't use TCP.
2026-03-01 06:35:02 [PROMPT] What DNS resolvers do you want to use with the VPN?
2026-03-01 06:35:04 [PROMPT] Do you want to allow a single .ovpn profile to be used on multiple devices simultaneously?
2026-03-01 06:35:04 [PROMPT] Note: Enabling this disables persistent IP addresses for clients.
2026-03-01 06:35:06 [PROMPT] Do you want to customize the tunnel MTU?
2026-03-01 06:35:07 [PROMPT] Choose the authentication mode:
2026-03-01 06:35:08 [PROMPT] Do you want to customize encryption settings?
2026-03-01 06:35:08 [PROMPT] Unless you know what you're doing, you should stick with the default parameters provided by the script.
2026-03-01 06:35:08 [PROMPT] Note that whatever you choose, all the choices presented in the script are safe (unlike OpenVPN's defaults).
2026-03-01 06:35:08 [PROMPT] See https://github.com/angristan/openvpn-install#security-and-encryption to learn more.
2026-03-01 06:35:11 [PROMPT] Okay, that was all I needed. We are ready to setup your OpenVPN server now.
2026-03-01 06:35:11 [PROMPT] You will be able to generate a client at the end of the installation.
2026-03-01 06:35:13 === Installing OpenVPN ===
2026-03-01 06:35:13 [INFO] Setting up official OpenVPN repository...
2026-03-01 06:35:13 [CMD] apt-get update
Ign:1 http://deb.debian.org/debian bullseye-backports InRelease
Hit:2 http://security.debian.org bullseye-security InRelease
Hit:3 http://deb.debian.org/debian bullseye InRelease
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Err:5 http://deb.debian.org/debian bullseye-backports Release
404 Not Found [IP: 146.75.122.132 80]
Hit:6 https://build.openvpn.net/debian/openvpn/stable bullseye InRelease
Reading package lists...
E: The repository 'http://deb.debian.org/debian bullseye-backports Release' does not have a Release file.
2026-03-01 06:35:16 [ERROR] Update package lists failed with exit code 100
2026-03-01 06:35:16 [FATAL] Update package lists failed
2026-03-01 06:35:16 Script exited with error