Exchangelib error in Python: www-authenticate
问题 I'm randomly facing an authentication error using library exchangelib: from exchangelib import DELEGATE, Account, Credentials creds = Credentials( username=username, password=pw) account = Account( primary_smtp_address=mailbox_mail, credentials=creds, autodiscover=True, access_type=DELEGATE ) The definition of the account variable causes the following error, but can't find why or anything useful in the relative documentation: [2020-09-03 15:00:56,588] {taskinstance.py:1059} ERROR - 'www