Office 365 Service error: "The input is not a valid Base-64 string"

Office 365 data is not added or updated to Snow License Manager and the SnowLicenseManagerOffice365Service Windows service throws the following error:

ERROR SnowSoftware.LicenseManager.Office365.CommandHandlers.SignalImportAsCommittedCommandHandler [(null)] - Problem importing 365 estate, will retry command in one minute: {"CustomerId":1,"ImportId":"460cf559-e40b-476c-a097-98d5cfcd3d05","SystemUserFullName":"SYSTEM","SystemUserId":null}

System.FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters.

Environment

Snow License Manager 8.x
Any report or menu related to Office 365 data in License Manager Web Interface

Analysis

Make sure that the SnowLicenseManagerOffice365Service is started, and stays started.

The log location for this service is: C:\Program Files\Snow Software\Logs\Office365Service/ open the most recent log file and search for the error message stated in the initial description

Resolution

Update License Manager to version 8.2.5 via Snow Update Service

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Support Hub

Product

Snow License Manager

Solution Area

Cloud

Visibility

Guest

URL Name

Office365ServiceerrorTheinputisnotavalidBase-64string-v2