How to Fix 0x80070490 When Updating Windows
The 0x80070490 error is one of the most common Windows errors. It typically appears during Windows Update, system setup or when installing drivers, and it is usually caused by corrupted system files, blocked services or network problems. Follow the fixes below in order; most users resolve it within 30 minutes.
What causes the 0x80070490 error?
The 0x80070490 error usually points to damaged Windows Update components, incorrect system time, a full system drive or security software blocking the connection. Occasionally it follows a failed update that left services in a half-configured state.
Fix it now
1. Reset the Windows Update components
Open Command Prompt as administrator and run: net stop wuauserv, net stop cryptSvc, net stop bits. Then rename the SoftwareDistribution and Catroot2 folders, and restart the services with the matching net start commands.
2. Run the Windows Update troubleshooter
Open Settings > System > Troubleshoot > Other troubleshooters and run the Windows Update troubleshooter. It automatically detects and repairs the most common update problems.
3. Install the update manually
Visit the Microsoft Update Catalog, search for the failing KB number, download the matching .msu file and install it manually.
4. Clear the software distribution cache
Stop the Windows Update service, delete the contents of C:\Windows\SoftwareDistribution\Download, then restart the service and try updating again.
5. Free up disk space
Windows updates need room to install. Use Storage Sense or Disk Cleanup to free several gigabytes on the system drive, then retry.
Related guides
Frequently asked questions
No. It is a software-level error that prevents an update or feature from running. It will not damage your files or hardware.
It usually points to corrupted system files, blocked update services, network problems or a full disk. The fixes in this guide cover all the common causes.
The fixes here keep your files. The Media Creation Tool repair reinstalls the OS, but it keeps your files and apps.