Warning on default app opening docx file

I upgraded my 8.1 laptop to 10 about 2 weeks ago now. Basically all is OK, but I do run in to quirks here and there.

The latest one is that whenever I dbl-click a .docx (or a .doc) on the desktop or in filemanager, I get the warning below. It nonetheless opens the file correctly. As you can see in the second image, I do have docx associated with word. Thinking I could maybe reset it, I switch it to open via Adobe Acrobat, opened one file, then switched it back to word. I did not get a similar error with acrobat, but when switched back, once again the error shows up with word.

I also tried the filemanager "Open With" context menu, selected wordpad and checked the "always open with". Then dbl-clicked to open with no error. Switched back using the context "open with". Again chosing Word and checking the "always" button. The error is back.

I do not have a similar problem with excel. Haven't tried PowerPoint or Access as I don't have any files readily available to use.

So how can I reset whatever thinks Word is no good?

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update - Just realized that it is only the first 'open'. If I open a docx (or doc), I get the warning. If I leave Word open and dbl-click a second file, I do not get the warning.

thx

took a quick look and I'll have to ask brink to make one.

I think I did everything but the total default reset. I'd rather not do that as I don't really know what defaults I've changed.

I did try both the quick and long repair from programs/features (PITA for the long as I had to go searching for my product key to input it) with no success.

- - - Updated - - -

Just tried dot & dotx. They both have the problem. Interestingly, I "opened with" some random *.rtf and chose word and checked the box. Closed it. Did another dbl-click and it opened the rtf without the warning. It's like defaults are stored somewhere and that's messed up. Particularly given the opposite is also true. "open with" a doc and change to wordpad and everything seems ok until you switch back to word.

I haven't tried that. I was thinking that whatever the problem was, I would try to get it fixed first instead of just hiding it. If you think trying the check will likely be benign, I give it a try.

It is fixed. I had been reluctant to do the reset all defaults as I'd have to go and redo all the others like txt, various image, etc.

But before hiding the message, I figured better to try the reset all first and deal with the defaults one at a time as I ran in to them. So far, it seems fixed. Rebooted and have tested doc,docx,dot, & dotx with success. Should have done that before asking you to make a .reg.

Of course the first thing I did was to open outlook and click on the link for your reply and couldn't understand why I couldn't reply. Then couldn't understand why I wasn't already logged in. Then realized my default was now edge and not firefox<g>.

thx for your help

I have just come across this post and I am having the same issue, is there a fix that will change the default back to word for all users?

Many thanks,