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Windows Defender Definition keep failing to install

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#1 Zooasaurus


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Posted 06 October 2017 - 04:54 PM

So ever since yesterday evening it seems that i can't install updates my Windows Defender Definition both from WU and WD interface update. The WU gave Error 0x80070643 while WD interface gave "Fatal Error During Installation" (-2147023293). Manual update exe files basically did nothing. Am i the only one experiencing this? How do i fix it?


So far my only problem with Win 10 is the Windows Update :|

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#2 FreeBooter


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Posted 07 October 2017 - 12:12 PM

Please try below programs one at time.


Download and run the Windows Update Troubleshooter.




Automatically reset Windows Update components


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