04-26-2023 10:38 PM
Hi @Shahwaz_Md
Thank you for writing to live community!
For agent upgrade in case you are upgrading Windows endpoints to Latest agent release and encountering following error "Cortex Agent upgrade failed", I believe you might have check new agent requirements of Windows Azure Code Signing KB5022661 requirement for >= 8.0 documented here and endpoints without this patch will not be able to install or upgrade to newer versions of Cortex XDR agent.
Additionally, there is a "test_acs" script available in the tenant Scripts Library which you may locate at (Incident Response -> Response -> Action Center -> Agent Script Library) using which you can check if endpoints have that patch as shared in below screenshot.
If above requirements is covered and issue still persists, please open a ticket with TAC so they can investigate further
Hope this helps!
Please mark the response as "Accept as Solution" if it answers your query.
Regards.
