Hello,
I am using Avast Premium Security 26.4.10932g (version 26.4.10932.983) on Windows 11 Home 25H2. Windows Update fails to install Security Patch KB5089549. Download is OK, but the installation process fails with error 0x80071a91. On learn.microsoft, I found several fixes to try. I managed to execute the first 3, but they did not repair Windows Update, and now I am stuck at 4th fix.
Here are the commands I am supposed to execute:
net stop wuauserv net stop bits net stop cryptSvc ren %windir%\SoftwareDistribution SoftwareDistribution.old ren %windir%\System32\catroot2 catroot2.old net start cryptSvc net start bits net start wuauserv
“net stop cryptSvc” fails because 2 Avast services depend on it. I tried a lot of things, including restarting Windows in Safe Mode, which did avoid loading one of the Avast services, but left the Antivirus running. I tried also setting Avast to Passive mode, but the antivirus service still loads. My problem is that I can’t execute the 2 “ren” commands, which prevents me from trying to repair Windows Update.
I’d like to avoid uninstalling Avast, but I fail to find any alternative. Does anyone have any suggestion?