What is WU-0x80070bc2?
WU-0x80070bc2 shows up as a medium-severity Windows operating system fault. A system restart is required to complete the installation of the update. The update installation enters a loop where it continually requests a reboot without completing. It sometimes comes down to pending file rename operations in the registry are locked or stuck. The steps below are ordered to resolve this efficiently.
Common Causes
- Pending file rename operations in the registry are locked or stuck.
- Windows Update services failing to update the installation status flag after a reboot.
- Conflict with third-party security software locking system boot configuration files.
Step-by-Step Fix Guide
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1
Force a reset of the Windows Update service configuration registry keys.
"Force a reset of the Windows Update service configuration registry keys." targets pending file rename operations in the registry are locked or stuck, one of the documented causes of WU-0x80070bc2.
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2
Clear the pending XML update transactions using Command Prompt commands.
"Clear the pending XML update transactions using Command Prompt commands." is worth trying when pending file rename operations in the registry are locked or stuck turns out to be the culprit.
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3
Temporarily disable third-party antivirus software during the reboot sequence.
If earlier steps didn't help, "Temporarily disable third-party antivirus software during the reboot sequence." directly addresses windows Update services failing to update the installation status flag after a reboot.
Commands & Diagnostics
net stop wuauserv
reg query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired"
Frequently Asked Questions
WU-0x80070bc2 is most often triggered by pending file rename operations in the registry are locked or stuck. Other reports point to windows Update services failing to update the installation status flag after a reboot and conflict with third-party security software locking system boot configuration files as contributing factors.
"Force a reset of the Windows Update service configuration registry keys" clears up most WU-0x80070bc2 reports by itself. The remaining steps above cover what's left.
WU-0x80070bc2 is a medium-severity issue. It can affect system stability, but the fix steps above typically resolve it without lasting damage.
Usually. WU-0x80070bc2 is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Sometimes. Microsoft regularly releases patches that fix known BSOD triggers including WU-0x80070bc2. Make sure Windows is fully up to date via Settings → Windows Update before attempting more advanced fixes.
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