(disclaimer) This is not funny, but I cannot help but laugh. I have the exact same issue described above, except that I have IE 11. Luckily for me, I have a image of my PC backed up from 2 days ago.
I have never ran tweaking (default selection) and decided to test it for the first time to see what it would do on my test machine that had absolutely no issues with it before. Since running tweaking I have the same exact issues as the OP mentioned with the exceptions; I have IE 11 and I do have restore points although I did not create them when Tweaking asked me to. I do not run a 3rd party AV on this PC because it is just a test machine and I often infect it and test things out without protection and then clean it or re-install Windows clean, but always in the end, leave it working.
Noticed that:
- IE 11 opens and immediately closes (both desktop version and Modern Interface verion/Metro verion).
- Most apps from MS Store open and immediately close.
- Cannot access Control Panel directly (but can access items inside by right clicking it and selecting them from the list).
- No sound even just testing from sounds doesn't work (did before and it's not muted).
- It seems to have turned off Windows Defender, when I turned it back on, it says definitions cannot be updated becase of an authentication issue.
Edit***
- Using restore from within the OS results in an error that it did not complete successfully and nothing was changed.
- Clicking on the charms did nothing so I had to log out /sign out and use the shift+restart to boot into advanced and ran restore from there which solved the problems by restoring to 2 days ago.
This is not a rant or anything, I just wanted to let you guys know because there IS something wrong with the program. Glad I didn't run it on an essential PC.