How to Fix 0x80070020 When Updating Windows
The 0x80070020 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 0x80070020 error?
The 0x80070020 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. 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.
2. Install the update manually
Visit the Microsoft Update Catalog, search for the failing KB number, download the matching .msu file and install it manually.
3. Temporarily disable firewall or antivirus
Some security suites block update servers. Briefly disable third-party antivirus and Windows Defender Firewall, retry the update, then re-enable them right away.
4. 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.
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.
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Frequently asked questions
Most cases take under 30 minutes. SFC and DISM scans can take longer depending on disk speed.
No. It is a software-level error that prevents an update or feature from running. It will not damage your files or hardware.
The fixes here keep your files. The Media Creation Tool repair reinstalls the OS, but it keeps your files and apps.