How to Repair 0x800B0101 Error in Windows 10 and 11
The 0x800B0101 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 0x800B0101 error?
The 0x800B0101 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. 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.
3. Check your system date and time
A wrong system clock breaks secure connections and can trigger update errors. Set time and time zone to automatic in Settings > Time & Language, then sync.
4. Install the update manually
Visit the Microsoft Update Catalog, search for the failing KB number, download the matching .msu file and install it manually.
5. Run SFC and DISM scans
Open Command Prompt as administrator and run sfc /scannow. If issues are found, follow up with DISM /Online /Cleanup-Image /RestoreHealth. Restart your PC afterwards.
Related guides
Frequently asked questions
Most cases take under 30 minutes. SFC and DISM scans can take longer depending on disk speed.
The fixes here keep your files. The Media Creation Tool repair reinstalls the OS, but it keeps your files and apps.
No. It is a software-level error that prevents an update or feature from running. It will not damage your files or hardware.