![]() ![]() If you want to troubleshoot this, keep calm and run Procmon You can check the Microsoft-Windows-Shell-Core/AppDefaults event log for clues about file associations reset. Stop using script or other pre-Windows 10 ways for configuring file association. If a program is trying to set some registry keys, Explorer will detect it and the file association will be reset. Why I'm getting an app reset notification? OEMDefaultAssociations.xml contains the following lines: HTM/HTML files associated with Internet Explorer.PDF files associated with Microsoft Reader.The end user will have this results without any app reset notifications: You need to use this XML file with the group policy Set a default associations configuration file.Īt the first logon, Explorer.exe will apply both XML. The second XML, FTA-IE-Only.xml will contain only a set of file extensions. You need to import this file using:ĭism /online /import-defaultappassociations:C:\CustomDefaultAssoc.xml The main XML, CustomDefaultAssoc.xml must contain all extensions. You just need to have two XML files, one for configuring the defaults and another one to force file association. As previously seen, removing entries in XML file could result in app reset notifications.īut don't panic, there is a solution to do it in your Windows 10 reference image. So, they removed everything in the XML file except Internet Explorer entries. For example, they want to configure Internet Explorer as default for HTTP/HTTPS only for HR people. Some IT Pros want to force only some file associations and let users in control for others file associations. How to force only a set of file associations? But at each logon the default association configured in XML file will be applied. Note: this policy will not prevent user to change the file association. ![]() If this group policy is enabled and the client machine is domain-joined, the file will be processed, and default associations will be applied at logon time. Your file will be copied in \Windows\System32 with the following name OEMDefaultAssociations.xml Configure the XML file for your domain-joined computerĬonfigure the following policy Set a default associations configuration file located in Computer\Policies\Administrative Templates\Windows Components\File Explorer. This policy works only for domain-joined computer.Ĭonfigure the XML file for your Windows 10 reference image:ĭism.exe /online /import-defaultappassociations:c:\temp\CustomFileAssoc.xml User will be able to change file association, but at the next logon file association will be configured using XML file.
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