Outlook office 365: the set of folders cannot be opened. Sign in microsoft exchange failed

  • Thread starter Siegfried Van Haesevelde
  • Start date

Siegfried Van Haesevelde

I have some problems with a mailbox where we always get the error:

Cannot open the set of folder, sign in in microsoft exchange failed.

I allready tried everything, new profile, delete the credentials nothing seems to work.

Somebody other ideas?

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