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I cannot install updates error code 0x80070645

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Older post from July 29, 2017. Details may be out of date.

Question asked on Jul 29, 2017

cannot install updates error code 0x80070645

Nor can I install Microsoft security essentials?

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MS Essentials error codes 0x80070645 and 8000FFFF wont allow updatesMay 7, 2014 How do I resolve the error code 80070645 issue when attempting to download Windows updates for Security Essentials program?Feb 7, 2017 I have been unable to log on for updates for security essenntials for 3 days please can you say if there is something wrong with the microsoft server as i cannot get windows updates either.Apr 27, 2015