Windows 10: How do I undo this?

I accidentally performed the "Return to a previous version of Windows" procedure.How do I undo this? Because I lost an important application! There is no system restore point.Thanks, Best regards

:)

 

Context-sensitive undo?

I'm using Office 2016, Windows 10, and I was making some edits in Excel (although this could apply to any MS Office scenario, I think), but I wanted to undo formatting in the cell I was on, but that change was applied a few steps ago.

I could hit Undo several times, but that would of course undo everything else that I've done. I would love if I could, just like there's "Paste Special" have an "Undo Special" and only undo changes to this cell.

Does such a thing exist? If not, is it possible to fake it somehow?

(This spreadsheet is a list about access -- I had just highlighted a cell yellow to indicate "awaiting info", typed things in a few more cells when I had that data, and then realized I had the info, so I just wanted to unhighlight that cell, since I did not need to draw attention to it. So it's not about calculations or conditional formatting)

 

How to set font to default in Windows 10

Go ahead and list the steps you did to see if it may be something we can easily undo to avoid a repair install.

 

reg deletions need undoing?

Pursuing a suggested fix for Windows 10 telling me "managed by your organization", I performed the list of register deletions suggested at Redirecting, by DaveM121. The results were fine -- W10 no longer tells me that after the reg deletions and restart.

Do I need to undo any of the deletions?