Windows Update Stuck or Failing? Here Is How to Fix It

By David Park Jul 1, 2026 8 min read Windows

Windows Update is essential for security and stability, but it sometimes gets stuck, fails to install, or throws cryptic error codes. Before you give up, try these proven solutions.

Run the Windows Update Troubleshooter

Windows includes a built-in troubleshooter for update problems. Go to Settings > System > Troubleshoot > Other troubleshooters and run Windows Update. This tool can automatically detect and fix common issues.

Clear the Update Cache

Sometimes corrupted update files cause problems. Open Command Prompt as administrator and run these commands to stop update services and clear the cache:

net stop wuauserv - Stop Windows Update service
net stop cryptSvc - Stop cryptographic service
net stop bits - Stop BITS service
net stop msiserver - Stop MSI installer
Delete everything in C:\Windows\SoftwareDistribution
Restart the services with net start commands

Free Up Disk Space

Windows Update needs free space to download and install updates. If your system drive is nearly full, updates can fail. Use Disk Cleanup to remove temporary files and empty the Recycle Bin. Aim for at least 20 GB of free space on your system drive.

Use the Windows Update Assistant

If Windows Update is completely broken, download the Windows Update Assistant from Microsoft official website. This tool can force-install the latest feature update and often bypasses update problems.

Repair System Files

Corrupted system files can prevent updates from installing. Run SFC /SCANNOW in Command Prompt as administrator. If that does not work, run DISM /Online /Cleanup-Image /RestoreHealth to repair the system image.