Hi, Guys as you know about Windows Update Error 0x80070643 on windows 10. So there could be lots of possible reasons to cause the issue. Let add the steps to fix the issue.
Windows Update Error 0x80070643 is know to be a common issue that users might have encounter when trying to install updates on Windows 10. This error can occur due to several reasons:
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Windows Update Services Stopped: If the Windows Update services not running, you possibly encounter this error. You can try restart these services to fix issue.
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Issues of .NET Framework: Problems with Microsoft .NET Framework can also cause this error. By useing the .NET Framework Repair Utility could fix these issues.
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Windows Security issue: Sometimes, issues with Windows Security can be a cause of error message. Resetting Windows Security could help to fix.
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Corrupted System Files: Corrupted or missing system files can cause this error. Running System File (SFC) and Deployment Image Servicing and Management (DISM) scan could help to fix the issue.
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Issues with Software Distribution and Catroot2 Folders: The Software Distribution and Catroot2 folders contains temporary files to installing Windows updates. If these folders files got corrupted then you might encounter this error. Renaming the folders and clearing the contents could help to fix the issue.
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Issues with Windows Recovery Environment's Partition Size: If the size of Windows Recovery Environment's partition is not enough then you possibly encounter the error. Adding space to the recovery environment partition most probably helps to avoid the issue.