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 runs check_windows_update to detect stuck updates and clears corrupted files automatically.

[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

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