Windows Security - Virus & Threat Protection won't update

P

paulC86_194

Hi,


No matter what I tried, windows virus & threat protection won't update and will display an error.


Based on people who had similar problems, here is what I tried, with no success:

1) used the windows update troubleshooter

2) used the "sfc /scannow" command, followed by "DISM.exe/Online /Cleanup-image /Restorehealth"

3) tried to trigger an update using the following command (content of "MpCmdRun.log" at the end of this post):

[COLOR=rgba(51, 51, 51, 1)]cd %ProgramFiles%\Windows Defender
MpCmdRun.exe -removedefinitions -dynamicsignatures
MpCmdRun.exe -SignatureUpdate[/COLOR]

4) tried to install the update manually from this link

5) tried to update through windows update, and found that there was a new update (version 20H2), which could not be installed in the end


Here is a link showing screenshots of all the steps above.


My system: windows 10 (64 bits)

I have no idea what was installed 2 weeks ago that could have caused this issue.


Here is a log that seems to give more info on the issue: "MpCmdRun.log"

-------------------------------------------------------------------------------------

MpCmdRun: Command Line: MpCmdRun.exe -removedefinitions -dynamicsignatures

Start Time: ‎Mon ‎Mar ‎29 ‎2021 18:20:51


MpEnsureProcessMitigationPolicy: hr = 0x1

Start: MpRemoveDefinitions(0)

Finish: MpRemoveDefinitions()

MpCmdRun: End Time: ‎Mon ‎Mar ‎29 ‎2021 18:20:52

-------------------------------------------------------------------------------------


-------------------------------------------------------------------------------------

MpCmdRun: Command Line: MpCmdRun.exe -SignatureUpdate

Start Time: ‎Mon ‎Mar ‎29 ‎2021 18:21:19


MpEnsureProcessMitigationPolicy: hr = 0x1

Start: MpSignatureUpdate()

Calling MpUpdateStartEx with option 0x1

Update started

Search Started (MU/WU update) (Path: https://fe2cr.update.microsoft.com/v6/)...

Time Info - ‎Mon ‎Mar ‎29 ‎2021 18:21:31 Search Completed

Download Started...

Download Completed

Download Completed

Installation Started...

Time Info - ‎Mon ‎Mar ‎29 ‎2021 18:23:14 Installation Completed

Search Started (Direct HTTP) (Path: https://go.microsoft.com/fwlink/?Li...2102.4&OsVersion=10.0.19041.867&altlocation=0)...

Download Started...

Download Completed

Installation Started...

Time Info - ‎Mon ‎Mar ‎29 ‎2021 18:25:23 Update failed with hr: 0x80070020

Installation Completed

Search Started (Direct HTTP) (Path: https://go.microsoft.com/fwlink/?Li...2102.4&OsVersion=10.0.19041.867&altlocation=0)...

Installation Completed

Update completed with hr: 0x80070020

ERROR: Signature Update failed with hr=80070020

MpCmdRun.exe: hr = 0x80070020.

MpCmdRun: End Time: ‎Mon ‎Mar ‎29 ‎2021 18:25:24

-------------------------------------------------------------------------------------



I am running out of suggestions... any ideas?

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