Error 0x80070643 is a general Windows Update installation error code that can appear on your Windows computer screen during installation. If you encounter this issue ...

I strongly urge you to check if your Windows Defender is updating automatically. If not, you should download and install the Windows Defender updates manually. Also go to Settings > Update & Security ...

1/11/24 update added below. Windows 10 users worldwide report problems installing Microsoft's January Patch Tuesday updates, getting 0x80070643 errors when attempting to install the KB5034441 security ...

Microsoft says some users might see 0x80070643 installation failures when trying to deploy the April 2025 Windows Recovery Environment (WinRE) updates. The known issue impacts the KB5057589 WinRE ...

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