Fix Windows 11 Update KB5050009 Not Installing Error 0x800f0991

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Fix Error Code 0x800f0991 When Installing Windows 11 Update KB5050009
Step 1) Start App Readiness Service
Step 2) Move $WinREAgent folder to different location
Step 3) Run Update Troubleshooter
Step 4) Restart Windows Update & Background intelligent transfer service
Step 5) Use Windows 11 Installation Assistant
Step 6) Use Microsoft Update Catalog
Step 7) Reset Windows Update Components
SC config trustedinstaller start=auto
net stop bits
net stop wuauserv
net stop msiserver
net stop cryptsvc
net stop appidsvc
netsh winsock reset
netsh winsock reset proxy
dism /Online /Cleanup-image /ScanHealth
dism /Online /Cleanup-image /CheckHealth
dism /Online /Cleanup-image /RestoreHealth
dism /Online /Cleanup-image /StartComponentCleanup
Sfc /ScanNow
net start bits
net start wuauserv
net start msiserver
net start cryptsvc
net start appidsvc

Right-click on the Wufix file and click Run as administrator
Restart your PC
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After 3 hours not successful...

Then download and install this, then this error show.
Windows Update Standalone Installer

Installer encountered an error: 0×800f0838

Guide please

maahimk