Windows 10: Task Manager is an app from an "unknown publisher"?

I just did a fresh Windows 11 installation. All of the most recent updates have been successfully installed.When I start Task Manager, I get a popup that says "Do you want to allow this app from an unknown publisher to make changes to your device?"I thought this might be a certificate error, so I tried to start Manage Computer Certificates, but I get the error, "An attempt was made to reference a token that does not exist."Here are the other things I've triedowershell:SFC /scannowDISM /Online /Cleanup-Image /CheckHealthDISM /Online /Cleanup-Image /ScanHealthDISM /Online /Cleanup-Image /Resto

:)

 

Task Manager is a file from unknown publisher?

When I try to launch Task Manager under administrator, I get UAC prompt asking if I want to allow the app from an unknown publisher to make changes to my device. This is a fairly recent problem, just few weeks ago I didn't have it.

My initial thought was that it may be malware, but that doesn't seem to be the case (quick scan by Windows Security and a third-party solution report all clear; same with VirusTotal scan of Taskmgr.exe). As far as I understand there's something wrong with the digital signature of the file (VirusTotal states that root certificate is not trusted by the trust provider).

I have checked if UAC prompt points to the actual Task Manager (C:\Windows\System32\Taskmgr.exe). Launching Taskmgr.exe directly gives the same warning. I have also checked if system time is correct.

If it's a certificate problem, what can I do about it? If it's not a certificate problem then what is it?

Win 10, build 21390.2025.

 

Task Manager has unknown publisher and failing Updates

Hi,

Recently I've noticed that when I open Task Manager it says that the publisher is unknown. Looking on some forums most say to do an sfc /scannow. This yields the result -

"Windows Resource Protection found corrupt files but was unable to fix some of them"

I went to Windows Update and that has error 0x800b0001 and 0x80246007.

I run the Windows updater troubleshooter states "An error occured while troubleshooting: A problem is preventing the troubleshooter from starting" Error code 0x800B0003.

Also, trying to manually install updates has error "Installer encountered an error: 0x800B0001" Unknown trust provider.

Finally, when updating Virus and Threat Definitions they haven't been successfully updated since 27th Deccember 2018. I get error code -2145124318

I'm running Windows 10 Pro 1803 OS Build 17134.472

Thanks all!

 

Task Manager Startup Flooded With Unknown Apps

Just click any column heading in task manager and enable command line view. Alternatively right click any entry then choose "open file location"




Let us know the file location and it might help.