thanks a lot for your reply Davidas
for the future, I keep this on my mind

toitoitoi

Hoi Davidas,
this is a problem created after the anniversary update of Windows 10.
You can find many suggested solutions on the Internet, but few bring a solution, and the one is more complicated...

Since I've received the anniversary update from Windows 10 (version 1607), regularly when starting up my computer, this message appears on the monitor: There can not be signed in to your account.
...

is your problem already solved? It's my problem too and I can't find any solutions on the internet.
See below an example of my problem

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