Windows Update Stuck at 100% Windows 11 [2026 Fix]
Quick Answer: Windows Update stuck because corrupted files in SoftwareDistribution folder. Stop Windows Update service, delete C:\Windows\SoftwareDistribution\Download contents, restart service.
Symptoms
- Update stuck at 100% for hours
- "Working on updates 100% complete"
- Spinning circle forever
- Update failed to install error
Root Cause
Corrupted download files, full disk space, or conflicting update processes.
Fix
Method 1: Clear SoftwareDistribution
# Run as Administrator
Stop-Service wuauserv
Remove-Item C:\Windows\SoftwareDistribution\Download\* -Recurse -Force
Start-Service wuauserv
Method 2: Run Troubleshooter
Settings → System → Troubleshoot → Other troubleshooters → Windows Update
Method 3: Reset Windows Update Components
net stop wuauserv
net stop bits
net start wuauserv
net start bits
Method 4: Check Disk Space
Get-WmiObject -Class Win32_LogicalDisk | Select-Object DeviceID, @{Name="FreeGB";Expression={[math]::Round($_.FreeSpace/1GB,2)}}
Need at least 20GB free for major updates.
How Againly Helps
Againly can inspect the relevant local evidence and propose a fix plan for review.
[CTA: Try free diagnosis]
FAQ
Q: Is it safe to force restart? A: At 100%, usually yes. Below 30% risks corruption.
Q: How long should I wait? A: 2-3 hours at 100% is normal for large updates.
Related: Windows 11 Slow Boot Fix