For mmc.exe I get "This app has been blocked for your protection"

Sort it by the expiration date and remove expired ones.

You can also remove untrusted list, I have removed "not listed".

You're able to open MMC.exe now?

For mmc.exe I get - Windows 10 Forums

ricecrispies said:

I get how to delete the untrusted certificates, but how do I work out which ones I shouldn't trust?

Think that best would be to run Sigcheck from Sysinternals (there are other similar utilities, but you can trust this one...)

Check also this application called RCC (it's second or third down. It will check certificates and compare them to MS database.

Below is example from its window

Edit: Never mind ... follow TairikuOkami's advice..

ricecrispies said:

I've already run sfc /scannow. It said there were some things it couldn't correct and to look in a ludicrously long and non-self-explanatory log file to find out what they were.

For future reference, you can run this command at Admin Command prompt to extract only the SR entries to show the errors from SFC /scannow. Substitue your user name for User Name.

It will produce a text file on your Desktop you can open with Notepad.


findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >"c:\users\User Name\desktop\sfcdetails.txt"

You can post the log file in your other thread on this if you like. We'll be happy to look at it, and let you know what it reported as corrupted.

Here you go: How to Upload and Post Screenshots and Files at Ten Forums Windows 10 Tutorials

ricecrispies said:

OK. Here we go...
Attachment 138329

Your CBS log doesn't contain any entries for SFC. Did you run the SFC /SCANNOW command first?

Run SFC Command in Windows 10 Windows 10 Customization Tutorials