This is how we can fix “An App default was reset” pop up in Windows 10 [Beginner’s guide]

Channel	Publish Date	Thumbnail & View Count	Actions
	Publish Date not found	0 Views	View on YouTube Channel URL not found

Just follow the video to fix the problem.

The thing you need to copy are as follows..
======================================================

Windows Registry Editor Version 5.00
;Let’s fix
;For Microsoft.3DBuilder
;——————-
;Fixes .stl, .3mf, .obj, .wrl, .ply, .fbx, .3ds, .dae, .dxf, .bmp
;… .jpg, .png, .tga

[HKEY_CURRENT_USER//SOFTWARE//Classes//AppXvhc4p7vz4b485xfp46hhk3fq3grkdgjg]
/”NoOpenWith/”=/”/”

;For Microsoft Edge
;——————-
;For File Types: .htm, .html
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppX4hxtad77fbk3jkkeerkrm0ze94wjf3s9]
/”NoOpenWith/”=/”/”

;For File Types: .pdf
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppXd4nrz8ff68srnhf9t5a8sbjyar1cr723]
/”NoOpenWith/”=/”/”

;For File Types: .svg
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppXde74bfzw9j31bzhcvsrxsyjnhhbq66cs]
/”NoOpenWith/”=/”/”

;For File Types: .xml
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppXcc58vyzkbjbs4ky0mxrmxf8278rk9b3t]
/”NoOpenWith/”=/”/”

;For Microsoft Photos
;——————-
;File Types: .3g2,.3gp, .3gp2, .3gpp, .asf, .avi, .m2t, .m2ts, .m4v, .mkv
;… .mov, .mp4, mp4v, .mts, .tif, .tiff, .wmv
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppXk0g4vb8gvt7b93tg50ybcy892pge6jmt]
/”NoOpenWith/”=/”/”

;For image file types
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppX43hnxtbyyps62jhe9sqpdzxn1790zetc]
/”NoOpenWith/”=/”/”

;Other File Types: .raw, .rwl, .rw2 and others
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppX9rkaq77s0jzh1tyccadx9ghba15r6t3h]
/”NoOpenWith/”=/”/”

;For Zune Music App
;——————-
;File Types: .aac, .adt, .adts ,.amr, .flac, .m3u, .m4a, .m4r, .mp3, .mpa
;.. .wav, .wma, .wpl, .zpl
[HKEY_CURRENT_USER//SOFTWARE//Classes//AppXqj98qxeaynz6dv4459ayz6bnqxbyaqcs]
/”NoOpenWith/”=/”/”

;For Zune Video App
;——————-
;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_USER//SOFTWARE//Classes//AppX6eg8h5sxqq90pv53845wmnbewywdqq5h]
/”NoOpenWith/”=/”/”

======================================================
Copy,all the lines in between the (===)Symbol.

Credits to all involved in creating the above registry key.

Don’t forget to subscribe if it helped..

Note : you need to reinstall your player to automatically open MKV files,else it will pop up everytime to select an app when you open .MKV files.

Thank you.