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Double-click the one you want to use and click through the prompts. Both hacks are included in the following ZIP file. There is one hack to add the Open with option to the context menu and one hack to remove it, in case you decide you don’t want it after all. If you don’t feel like diving into the Registry yourself, we’ve created some downloadable registry hacks you can use.
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If not, try restarting explorer.exe or logging out and logging back in. The “Open with” option on the context menu should be available right away. Close Registry Editor and restart your computer.Close the Registry Editor either by selecting “Exit” from the “File” menu or by clicking the “X” button in the upper-right corner of the window.Right-click on the empty space in the right pane and click New > DWORD (32-bit Value).Head to HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > CurrentVersion > Policies.In the Start menu search bar, search for regedit and select Run as administrator.As such, you can use it to fix the missing thumbnails problem. Like the Group Policy tool, Windows Registry contains some of the most important system settings. Related: Windows 10 Registry Tweaks to Improve & Unlock Features 10. Once you have reconfigured these settings, restart your computer and check if you can see the thumbnails. There, open Turn off the display of thumbnails and only display icons.
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Head to User Configuration > Administrative Templates Windows components > File Explorer. This is not the only setting within Group Policy that you need to check.
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Right-click the file and head to Open With > Choose another app. To fix it, you need to set a new default application. The thumbnails might be missing for a certain file type because Windows doesn’t know which app to use for opening that file.
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