"Open With" then "Use by Default" Doesn't work anymore?

So maybe i stopped updating windows when i Heard that MS was Deleting our files.

Then some time later i found out that "Use By Default" function isn't setting the Application to use for opening a certain file.

Like this :



So i thought something probably went wrong after the update, but If i install a program which modifies the "Open with by Default" entry for the known file types then it works. But it isn't working with Windows.

Please help me fix this.

If you are using build 1803, then there is a bug of this kind reported as related to one specific windows update.

Some have found uninstalling that restores this function.

Discussed at some length in forum.
Version 1803 does not allow me to set defaults by app - MoBEX error Solved - Windows 10 Forums
cannot change file association - Windows 10 Forums
After CU KB4462919 W 10 v1803: can you change default program?Y/N - Windows 10 Forums

dalchina said:

**Some have found uninstalling that restores this function.**

You mean the Whole Windows? Like Downgrade? Or the Update and How? Please let me know.

xtcrefugee said:

As a workaround, you could use FileTypesMan to edit what app opens for each file type instead of using the "user choice" override.

Thanks for linking me that Application!
I used the RegEdit to find the specific extension and fixed it!

Hope Microsoft soon fixes this.

related to one specific windows update.

Some have found uninstalling that restores this function.

'that' refers to 'one specific windows update'

Read the threads I've linked- it's there: see thet title of the last one. That's the one. That may not be the only cause, though,

If you uninstall the update you would then need to 'hide' it (stop it reinstalling). Tutorial available, or use Windows Update Minitool (free).

dalchina said:

'that' refers to 'one specific windows update'*****
.

Sorry about that i was actually in a hurry to fix it up and ge back to working. but ill see if i can do so to remove this bug.

Thanks!