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Error message: "The operation has been canceled due to restrictions in effect on this computer"
Posted by Daniel Weuthen on 19 Jul 2018 15:39

Problem: While trying to access the archive, the error message "The operation has been canceled due to restrictions in effect on this computer" appears. The error report may also contain the following message: "MailStore is unable to open a web page in Microsoft Outlook. The most common reason is functionality blocked by group policies. Error code: WAIT_FOR_HWND_TIMEOUT".

Solution: The problem can be caused by uninstalling Google Chrome or Mozilla Firefox while set as default web browser. To resolve the problem, follow these steps:

  • Open Regedit under the Windows user who is experiencing the problem, in order to modify your system registration.
  • Browse to HKEY_CURRENT_USER\Software\Classes\.html
  • Right click the value for the .html key and select Modify
  • Change the value from ChromeHTML to htmlfile (or from FireFoxHTML to htmlfile)
  • Repeat these steps for .htm and .shtml keys if they exist. You may also want to check the .xhtml and .xhtm keys.
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