Neowin

Windows 10 KB5048239 causes 0x80070643 error but Microsoft already has an official fix

The infamous "0x80070643 - ERROR_INSTALL_FAILURE" issue is back with one of the new Windows 10 updates KB5048239. Thankfully, there is a fix. This past week, alongside the Patch Tuesday updates for ...
Neowin

Windows 10 KB5001716 install fails with 0x80070643 error but a fix seemingly exists

There were some problems installing updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x80070643) Another one ...
Bleeping Computer

Windows 10 KB5001716 update fails with 0x80070643 errors, how to fix

Microsoft is pushing out a Windows 10 KB5001716 update used to improve Windows Update that is ironically failing to install, showing 0x80070643 errors. Titled 'KB5001716: Update for Windows Update ...
Bleeping Computer

Microsoft working on a fix for Windows 10 0x80070643 errors

Microsoft is working to fix a known issue causing 0x80070643 errors when installing the KB5034441 security update that patches the CVE-2024-20666 BitLocker vulnerability. While the security issue was ...
ExtremeTech

Microsoft: Windows 10 April 2025 Update Error 0x80070643 Is Harmless, No Action Needed

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Ars Technica

Windows 10 failed to install an update - Error 0x80070643

There seems to be nothing that anyone can identify that will tell you if it's going to work properly on any particular machine, but the only people for whom it is a critical fix are the ones that use ...