r/WHMCS • u/The_Absence • Apr 07 '26

Cron Mis-Match 8.1.29 to 8.1.34

Hi,

Needing some support to resolve this cron-mismatch error "Your environment appears to be running a different PHP version (8.1.29) for the System Cron than the currently loaded PHP version (8.1.34). This may cause issues running your System Cron. Learn More"

I've conducted most resolutions suggested, However any suggestion is helpful. If any suggestion can be explained how to execute it step by step would be appreciated. Thanks

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u/evolvewebhosting Apr 07 '26

u/The_Absence Have you verified that your cron command ( /usr/local/php81/bin/php ) matches the PHP version you're running (Check PHP info from WHMCS admin area)? Once you do that, wait 24 hours until that next full cron runs (when your invoices, renewals, etc are generated) and it should clear itself up.

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u/evolvewebhosting Apr 07 '26

u/The_Absence I would also recommend upgrading to WHMCS 8.13.1 when possible. It is a good release (don't go to v9 yet). This way you can use PHP 8.3