often fails to install WHM/CPanel
I installed WHM/cPanel on my new server, but it kept failing.
I've tried using Linux 8, 9, and 10, and I've tried switching to Ubuntu 22 and 24, but it still fails.
2026-07-03 15:04:23 868 [5915] (DEBUG): - ssystem [BEGIN]: ./fix-cpanel-perl
2026-07-03 15:04:23 868 [5915] (DEBUG): 2026-07-03 15:04:23 611 ( INFO): Downloading bootstrap packages from httpupdate.cpanel.net
2026-07-03 15:04:23 868 [5915] (DEBUG): 2026-07-03 15:04:23 795 (DEBUG): Retrieving http://httpupdate.cpanel.net/ubuntu/pool/sha512.asc
2026-07-03 15:04:24 868 [5915] (DEBUG): 2026-07-03 15:04:24 795 (DEBUG): Retrieving http://httpupdate.cpanel.net/ubuntu/pool/sha512
2026-07-03 15:15:26 868 [5915] (DEBUG): 2026-07-03 15:15:26 834 ( INFO): FILE - /usr/local/cpanel/tmp/rpm_downloads/sha512
2026-07-03 15:15:26 868 [5915] (DEBUG): 2026-07-03 15:15:26 835 ( INFO): SIG - /usr/local/cpanel/tmp/rpm_downloads/sha512.asc
2026-07-03 15:15:26 868 [5915] (DEBUG): 2026-07-03 15:15:26 836 ( INFO): URL - http://httpupdate.cpanel.net/ubuntu/pool/sha512
2026-07-03 15:15:26 868 [5915] (DEBUG):
2026-07-03 15:15:26 868 [5915] (DEBUG): 2026-07-03 15:15:26 883 (FATAL): Invalid signature for /usr/local/cpanel/tmp/rpm_downloads/sha512. (/usr/local/cpanel/tmp/rpm_downloads/sha512)
2026-07-03 15:15:26 868 [5915] (ERROR): - ssystem [EXIT_CODE] './fix-cpanel-perl' exited with 2
2026-07-03 15:15:26 868 [5915] (DEBUG): - ssystem [END]
2026-07-03 15:15:26 874 [5915] ( WARN): Run #5/5 failed to run script fix-cpanel-perl
2026-07-03 15:15:26 882 [5915] (ERROR): Failed to run script fix-cpanel-perl to bootstrap cPanel Perl.
2026-07-03 15:15:26 46 [5915] ( INFO): cPanel is here to help! Our technical KnowledgeBase and cPanel Community is just a click away at https://support.cpanel.net/
2026-07-03 15:15:26 883 [5915] (FATAL): The script fix-cpanel-perl terminated with the following exit code: 2 (0); The cPanel & WHM installation process cannot proceed.
...propagated at /home/cPanelInstall/selfgz5198/Installer.pm line 676.2026-07-03 15:15:26 46 [5248] ( INFO): cPanel is here to help! Our technical KnowledgeBase and cPanel Community is just a click away at https://support.cpanel.net/
2026-07-03 15:15:26 163 [5248] (FATAL): Bootstrapping cPanel Perl failed: 256
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Opening a support ticket will get you a much quicker resolution.
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If you've tried multiple different operating systems it is more likely to be the environment of the server than the cPanel installer. I would check and see if a basic "yum update" works after the initial OS install, as that would show networking issues or problems with the installation.
You're always welcome to open a ticket, either with us or your provider, to have help tracking down the issue.
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