Yesterday, I UPGRADED Avira to the latest version, and when I restart I get "This OPERATION has been cancelled due to restrictions in effect on this computer. Please contact your system administrator.". I searched and it says it's a outlook and IE problem. So reset the IE and tried to remove outlook. Funny thing is I don't use IE only for windows update and never outlook. I even put my comp in safe mode and ran avira, malwarebyte, and windows malicious removal tool and it came up clean. Everything works just when everything loads up I get this popup when I start my comp. I can live with it but just want to make sure it's not a major problem or to find out if there is a fix.I noticed something, every 2 hours I get the pop up no matter what I am doing. Sometimes you will encounter a problem with the restrictions on your computer. To be more clear, whenever you click on a drive or a folder in your computer, you will get a message “This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator.” This occurs even if you are logged in as an administrator.

You will be able  to  run  all executables on your desktop and will be able to open all documents on the desktop. The programs also will work but you will not be able to save any thing in any folder as it refuses to open the folder/drive in the “Save as” window.

The solution of this problem can be done by using the Microsoft Management Console to fix issues with access permissions.TGA. The procedure is as follows..

1.Click Start > Run. Type MMC and then click OK.
2.Click Console and then click Add/remove Snap-in.
3.In the Add/remove Snap-in DIALOG box, click Add.
4.In  the Add Standalone Snap-in  list, click Group Policy, and then click Add.
5.In the Group Policy object window, click Finish.
6.Click Close, and then click OK.
7.Go to LOCAL Computer Policy > User CONFIGURATION > Administrative Templates.
8.Click Desktop.
9.In  the  right-pane,  Right-click Hide my Network  Places icon on desktop, and then click Properties.
10.Click Not Configured, and then click OK.
11.Expand Windows Components, and then click Windows explorer.
12.In  the  right pane,  right-click Prevent access  to drives from my Computer, and then click Properties.
13.Click Not Configured, and then click OK.
14.Quit the Local Computer Policy MMC snap-in.

Or this.I tried the second method first and restarted same issue, and same result as on the first method.