Your migration failed checking destination credentials. Invalid length for a Base-64 char array or string.

Issue:

Migration fails with the error "Your migration failed checking destination credentials. Invalid length for a Base-64 char array or string."

 

Answer:

This error occurs when the Azure Access key is incorrect for the OneDrive for Business or the SharePoint Online endpoints.

Make sure the Azure Access key is correct, and retry.

Note: This error message can surface if both the Azure Access Key and the Azure Storage Account Name are incorrect.

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