Hello sir / Mam 

you don't have permission to shutdown and restart this computer windows 7

Is it a virus or Window 7 issue. Even we are facing it

Hello Team, 

I am facing the same issue with my windows 7 and getting below error when i shutdown and restart the system.. 

"You don't have permission to shutdown and restart this computer"

Am also facing the same issue with windows 7  right now...is that any chenges are going on from microsoft side or do i need to talk with my security team?can anyone please answer from microsoft side?

I don't know if it is a Windows issue or what it is. One user had this problem and I didn't found any malware or virus at his computer.
SFC didn't found any issues and the disk integrity is fine, so I searched some IT forums and found this and it seem to "solve" the problem.

- Open "Run" and digit "gpedit.msc"
- Go to "Computer Settings > Windows Settings > Security Settings > Local Policies > Security Options
- search "User Account Control: Run all administrators in Admin approval" and set it to ENABLE
- Open "Run" again and do a "gpupdate /force"

If you can't turnoff after the gpupdate then kill and rerun "Explorer.exe".

After the reboot PC seems to not lock the shutdown command anymore but I really don't know why this happened.

Try enabling UAC. (FKTakahashi beat me to it)

There appear to be recent updates related to the crypt32.dll vulnerability that are impacting Win7 machines. I don't have the KB numbers on-hand but there are three recent ones that appear to be on all of our affected machines.

I don't know if it is a Windows issue or what it is. One user had this problem and I didn't found any malware or virus at his computer.
SFC didn't found any issues and the disk integrity is fine, so I searched some IT forums and found this and it seem to "solve" the problem.

- Open "Run" and digit "gpedit.msc"
- Go to "Computer Settings > Windows Settings > Security Settings > Local Policies > Security Options
- search "User Account Control: Run all administrators in Admin approval" and set it to ENABLE
- Open "Run" again and do a "gpupdate /force"

If you can't turnoff after the gpupdate then kill and rerun "Explorer.exe".

After the reboot PC seems to not lock the shutdown command anymore but I really don't know why this happened.

This is only applyable on Win 7 Pro / Enterprise / Ultimate.

It seems probably, that the Adobe Service is the root cause preventing Windows 7 from shutdown - found that mentioned also within a reddit.com thread. 

@Rahul_PatelDV can you confirm, that Adobe Creative Cloud is installed on your machine. 

In don't think, the crypt32.dll vulnerability is the issue - due to my knowledge, the patch has been shipped only to Windows 10. 

Compiled some details and workaround into a blog post at - maybe it helps:

Windows 7 prevents shutdown / restart (Feb. 2020)