Windows 10: Default apps reset after every reboot

So out of the Blue, I noticed that Firefox wasn't my default browser anymore (it started asking about it again), so I went into the settings and set everything again (not just the browser, every default app) but after a reboot, Firefox asked me again so it clearly doesn't keep the settings anymore for some reason.

It seems to be caused by the KB4550945 Update I installed recently but I have no idea.

Windows 10 x64 1909 Build 18363.815

submitted by /u/FireWire400
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:)

 

Resetting Default App in Widows 10

Hi Peter,

Some of the possible reason why you're default apps reset every reboot is due to corrupted system files or third party software. We suggest that you set at least 2 or 3 default apps then perform a clean boot and check if the issue is occurring due to any
third party programs. Click this
link to view the steps on how to perform a clean boot.

Let us know if the suggestions help you in resolving the problem.

 

Lost default photo viewer after profile rebuild

Thanks Brink. I've tried those steps before i started searching Google. After the profile rebuild i don't have the Photo app listed to choose to make it default in either the system settings for default apps or the Open With option.

I can't even find it doing a search. Seems to have been removed somehow with the profile rebuild, which doesn't make sense.

Might be helpful to list what i've done I've done the open with check, the choose default program in the system menu, tried that in device manager default programs also. I've checked the programs and features Turn windows features on/off and it's not listed there (never thought it was but that was a suggestion), searched the MS Store, it's not listed there either.

I don't like playing in the registry unless i have defined steps and haven't found anything for this yet, just the Win7 version like in my OP.

 

Windows 10 resetting default programs on restart/reboot.

This did not work for me. Please help.