File associations no longer work properly on Windows 10 after a buggy update. Windows does not allow you to select certain programs as default settings. We tested several computers running the stable version of Windows 10, and everyone had this problem.
This is a weird bug. It affects some applications, but not others. For example, Windows 10 can not let you make Adobe Photoshop or Notepad ++ a default application for images or text files. But you can do other programs, such as IrfanView, VLC or Google Chrome, by default.
This is, for example, what happens when we try to set Notepad ++ as the default .txt file program in the Windows 10 App Settings app. Windows just ignores our selection and select Notepad by default.
The same problem occurs when we try to select a new association by right-clicking on a file and using the "Open With" shortcut menu. After selecting Notepad ++ and selecting "Always Use This App", the file will be opened correctly in the program we selected.
The next time we open the file, it opens in Notes instead of Notepad ++. Windows just forgets our chosen file association.
Again, we have tested several Windows 10 computers running the update in April 2018 and all of us tested have this problem. It does not affect all applications, but it affects at least Photoshop and Notepad ++. This error does not seem to affect computers running the October 2018 update, which was triggered by multiple data loss bugs and has not yet been remodeled.
Based on our research and various social media, we have found our theory is that this did not work properly when Microsoft released the KB4462919 update on October 9th. But we really do not know. It's broken on the stable version of Windows 10 today and it's probably been broken for a while. This used to work!
Windows 10 appears to be buggies and buggies. Why does Microsoft not test things like this before releasing updates?
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