How to Fix 'an App Default Was Reset' Error on Windows 10

This updated guide examines How to Fix 'an App Default Was Reset' Error on Windows 10 and organizes the essential facts, background, and practical takeaways in clear American English.

Basically, its default associated file type is reset to the built-in Windows application instead of the one you set.

This guide will show you how to fix and stop receiving the message An app default was reset on Windows 10.

Note : The fix will exclude Windows applications that integrate Microsoft Edge, Photos, 3D Builder, Zune Music and Zune Video from the list in the Open with dialog box.

You can still set default programs for Windows applications and link file types in Control Panel after applying the fix below.

Here's how:

1. Follow step 2 (for repair) or step 3 (undo repair) below for what you want to do.

2. To fix the "An app default was reset" error, download this file and go to step 4 below.

(The content of the.reg file for reference)

Code:

Windows Registry Editor Version 5.00; Microsoft.3DBuilder;File Types:.3ds,.3mf,.bmp,.dae,.dxf,.fbx,.jpg,.obj,.ply,.png,.stl,.tga,.wrl [HKEY_CURRENT_USERSOFTWAREClassesAppXvhc4p7vz4b485xfp46hhk3fq3grkdgjg] "NoOpenWith"="" "NoStaticDefaultVerb"=""; Microsoft Edge;File Types:.htm,.html [HKEY_CURRENT_USERSOFTWAREClassesAppX4hxtad77fbk3jkkeerkrm0ze94wjf3s9] "NoOpenWith"="" "NoStaticDefaultVerb"="";File Types:.pdf [HKEY_CURRENT_USERSOFTWAREClassesAppXd4nrz8ff68srnhf9t5a8sbjyar1cr723] "NoOpenWith"="" "NoStaticDefaultVerb"="";File Types:.svg [HKEY_CURRENT_USERSOFTWAREClassesAppXde74bfzw9j31bzhcvsrxsyjnhhbq66cs] "NoOpenWith"="" "NoStaticDefaultVerb"="";File Types:.xml [HKEY_CURRENT_USERSOFTWAREClassesAppXcc58vyzkbjbs4ky0mxrmxf8278rk9b3t] "NoOpenWith"="" "NoStaticDefaultVerb"=""; Microsoft Photos;File Types:.3g2,.3gp,.3gp2,.3gpp,.asf,.avi,.m2t,.m2ts,.m4v,.mkv, mov,.mp4, mp4v,.mts,.tif,.tiff,.wmv [HKEY_CURRENT_USERSOFTWAREClassesAppXk0g4vb8gvt7b93tg50ybcy892pge6jmt] "NoOpenWith"="" "NoStaticDefaultVerb"="";File Types: Most Image File Types [HKEY_CURRENT_USERSOFTWAREClassesAppX43hnxtbyyps62jhe9sqpdzxn1790zetc] "NoOpenWith"="" "NoStaticDefaultVerb"="";File Types:.raw,.rwl,.rw2 and others [HKEY_CURRENT_USERSOFTWAREClassesAppX9rkaq77s0jzh1tyccadx9ghba15r6t3h] "NoOpenWith"="" "NoStaticDefaultVerb"=""; Zune Music;File Types:.aac,.adt,.adts,.amr,.flac,.m3u,.m4a,.m4r,.mp3,.mpa,.wav,.wma,.wpl,.zpl [HKEY_CURRENT_USERSOFTWAREClassesAppXqj98qxeaynz6dv4459ayz6bnqxbyaqcs] "NoOpenWith"="" "NoStaticDefaultVerb"=""; Zune Video;File Types:.3g2,.3gp,.3gpp,.avi,.divx,.m2t,.m2ts,.m4v,.mkv,.mod,.mov,.mp4, mp4v,.mpe,.mpeg,.mpg,.mpv2,.mts,.tod,.ts,.tts,.wm,.wmv,.xvid [HKEY_CURRENT_USERSOFTWAREClassesAppX6eg8h5sxqq90pv53845wmnbewywdqq5h] "NoOpenWith"="" "NoStaticDefaultVerb"=""

3. To undo the error "An app default was reset ', download this file and go to step 4 below.

(The content of the.reg file for reference)

Code:

Windows Registry Editor Version 5.00; Microsoft.3DBuilder;File Types:.3ds,.3mf,.bmp,.dae,.dxf,.fbx,.jpg,.obj,.ply,.png,.stl,.tga,.wrl [HKEY_CURRENT_USERSOFTWAREClassesAppXvhc4p7vz4b485xfp46hhk3fq3grkdgjg] "NoOpenWith"=- "NoStaticDefaultVerb"=-; Microsoft Edge;File Types:.htm,.html [HKEY_CURRENT_USERSOFTWAREClassesAppX4hxtad77fbk3jkkeerkrm0ze94wjf3s9] "NoOpenWith"=- "NoStaticDefaultVerb"=-;File Types:.pdf [HKEY_CURRENT_USERSOFTWAREClassesAppXd4nrz8ff68srnhf9t5a8sbjyar1cr723] "NoOpenWith"=- "NoStaticDefaultVerb"=-;File Types:.svg [HKEY_CURRENT_USERSOFTWAREClassesAppXde74bfzw9j31bzhcvsrxsyjnhhbq66cs] "NoOpenWith"=- "NoStaticDefaultVerb"=-;File Types:.xml [HKEY_CURRENT_USERSOFTWAREClassesAppXcc58vyzkbjbs4ky0mxrmxf8278rk9b3t] "NoOpenWith"=- "NoStaticDefaultVerb"=-; Microsoft Photos;File Types:.3g2,.3gp,.3gp2,.3gpp,.asf,.avi,.m2t,.m2ts,.m4v,.mkv, mov,.mp4, mp4v,.mts,.tif,.tiff,.wmv [HKEY_CURRENT_USERSOFTWAREClassesAppXk0g4vb8gvt7b93tg50ybcy892pge6jmt] "NoOpenWith"=- "NoStaticDefaultVerb"=-;File Types: Most Image File Types [HKEY_CURRENT_USERSOFTWAREClassesAppX43hnxtbyyps62jhe9sqpdzxn1790zetc] "NoOpenWith"=- "NoStaticDefaultVerb"=-;File Types:.raw,.rwl,.rw2 and others [HKEY_CURRENT_USERSOFTWAREClassesAppX9rkaq77s0jzh1tyccadx9ghba15r6t3h] "NoOpenWith"=- "NoStaticDefaultVerb"=-; Zune Music;File Types:.aac,.adt,.adts,.amr,.flac,.m3u,.m4a,.m4r,.mp3,.mpa,.wav,.wma,.wpl,.zpl [HKEY_CURRENT_USERSOFTWAREClassesAppXqj98qxeaynz6dv4459ayz6bnqxbyaqcs] "NoOpenWith"=- "NoStaticDefaultVerb"=-; Zune Video;File Types:.3g2,.3gp,.3gpp,.avi,.divx,.m2t,.m2ts,.m4v,.mkv,.mod,.mov,.mp4, mp4v,.mpe,.mpeg,.mpg,.mpv2,.mts,.tod,.ts,.tts,.wm,.wmv,.xvid [HKEY_CURRENT_USERSOFTWAREClassesAppX6eg8h5sxqq90pv53845wmnbewywdqq5h] "NoOpenWith"=- "NoStaticDefaultVerb"=-

4. Save the.reg file to the desktop.

5. Double click on the downloaded.reg file to merge it.

6. When prompted, click Run> Yes (UAC)> Yes> OK to approve the merge.

7. You can now delete the downloaded.reg file if you like.