How to Fix Windows Update Stuck at 0% Downloading on Windows
Windows Update stuck at 0% download and won't progress? Fix updates that hang at "Downloading 0%" on Windows 10 and 11 when the progress bar never moves.
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Main Troubleshooting Guide
How to Fix Windows Update Errors →Complete symptoms, causes, and step-by-step solutions
Symptoms
You might be experiencing this problem if you notice:
- •Windows Update shows "Downloading - 0%" and never progresses
- •Update has been at 0% for over 30 minutes
- •Multiple updates stuck at 0% simultaneously
- •Windows Update progress briefly shows a percentage then drops back to 0%
- •Settings shows "Downloading" but no network activity in Task Manager
- •Update starts downloading after restart but gets stuck at 0% again
- •Feature updates (like Windows 11 23H2) stuck at 0% while cumulative updates work
Common Causes
- ⚠Background Intelligent Transfer Service (BITS) stuck or corrupted
- ⚠SoftwareDistribution folder (update cache) corrupted
- ⚠Network connectivity issues or firewall blocking Windows Update servers
- ⚠VPN or proxy preventing access to Microsoft update CDN
- ⚠Insufficient disk space for the download
- ⚠Third-party antivirus blocking update download connections
- ⚠Windows Update service dependencies not running (BITS, Cryptographic Services)
Solutions
Solution 1: Reset Windows Update Components
- 1Open Command Prompt as Administrator
- 2Run these commands in order:
- 3net stop wuauserv
- 4net stop bits
- 5net stop cryptsvc
- 6ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
- 7ren C:\Windows\System32\catroot2 catroot2.old
- 8net start wuauserv
- 9net start bits
- 10net start cryptsvc
- 11Go back to Windows Update and check for updates again
Solution 2: Restart BITS Service
- 1Press Win+R → type services.msc → Enter
- 2Find "Background Intelligent Transfer Service" (BITS)
- 3Right-click → Stop, wait 5 seconds, then right-click → Start
- 4Ensure Startup type is set to "Automatic (Delayed Start)"
- 5Also check: "Windows Update" service — should be Running/Automatic
- 6Also check: "Cryptographic Services" — should be Running/Automatic
Solution 3: Check Network and Free Up Space
- 1Run a speed test to confirm internet connectivity
- 2If using a VPN: disconnect and try updating without it
- 3If using a proxy: temporarily disable it in Settings → Network & Internet → Proxy
- 4Check free disk space: Windows Update needs at least 10-20GB free on the system drive
- 5Run Disk Cleanup to free space if needed
- 6Try switching DNS to 8.8.8.8 / 1.1.1.1 in case ISP DNS is blocking Microsoft CDN
Solution 4: Use Windows Update Troubleshooter and DISM
- 1Open Settings → System → Troubleshoot → Other troubleshooters
- 2Run "Windows Update" troubleshooter
- 3If that doesn't work: Open Command Prompt as Admin
- 4Run: DISM /Online /Cleanup-Image /RestoreHealth
- 5Wait for it to complete (may take 10-20 minutes)
- 6Run: sfc /scannow
- 7Restart and try Windows Update again
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