The default application is the program that Windows uses automatically when you open a specific file type or protocol.
The default application association for file extensions is per-user settings by default, so you need to log into the user account for which you want to restore the default links for the respective file extensions. application.
This guide will show you how to restore default registry entries and application links for the file type or protocol you choose in Windows 10.
This can be useful, for example, when certain file types are opened with the wrong app by default.
Reset all file associations to Microsoft’s recommended defaults
This option will reset all file types and protocol associations to defaults, recommended by Microsoft for your user accounts only.
1. Open Settings and click the Apps icon .
2. Click on Defaults apps on the left side and hit the Reset button at the bottom right.
3. Now, you will see a check mark to the right of the Reset button to indicate the process is complete.
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Restore default associations for specific protocols or file types
This option resets links, icons and registry entries for the protocol or downloaded file types back to the defaults.
The list of default protocol links and file extensions that are available for download below is just the beginning and a work in progress. Posts will continually add to the list.
1. Click the link for the file type or protocol for which you want to restore the default links in the downloadable zip file below.
2. Save the .reg file to the desktop.
3. Double-click the downloaded .reg file to merge.
4. When prompted, click Run> Yes (UAC)> Yes> OK to approve the merge.
If you are logged in with a standard user account, then you will also get the Cannot import type error. Just press OK. The downloaded .reg file that is responsible for all users can only be successfully merged with the admin account. The downloaded .reg file will still restore the default links for your account.
If the .reg file cannot be merged, double-check in Default Apps to make sure that the .reg file extension has the current default program set to Registry Editor ( C: Windows regedit.exe ). Then try to merge the .reg file again.
5. Sign out and log back in, or restart the computer to apply the changes.
6. If you are already logged in as a standard user and this still doesn’t help, then ask the admin to merge the .reg file required for the file extensions listed below when logging into the account. their admin account.
7. When done, you can delete the downloaded .reg file if you want.
You can download all available file extensions here.