Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Sven_Leupold_85's avatar
Sven_Leupold_85
Icon for Cirrus rankCirrus
Oct 08, 2013

Licensing Error: Error 51133, F5 registration key is not compatible with the detected platform

Hi I got a license error when I activated a license on a Redhat/KVM based VE (11.2.1) Licensing Error: Error 51133, F5 registration key is not compatible with the detected platform - This platfor...
virtualization
Michael_Voight_'s avatar
Michael_Voight_
Historic F5 Account
Jan 28, 2014

I suspect this might be the Lab license allowing more flex. I do not find documented support for 6.4