Hi,
I had exactly the same problem and tried everything but nothing worked. Reinstalled windows 10 after format and everything works now. No more flashing icons and messages. I think Microsoft sends...

Sorry if my vulgarity offended you.

Hi,

Tried that but no joy. Restored from previous image and no problems!!!! Way to go Microsoft asses.

Hi,
I get this error after the update: an app caused a problem with the default app setting for .pdf files, so it was reset to microsoft edge.

Any ideas??