This was identified as a change by Microsoft in what licenses are required to perform CloudCover 365 backup. If you're still seeing this on any mailboxes please confirm that a supported Microsoft 365 plan that includes full Exchange Online and Graph API support is used (e.g., Microsoft 365 Business Standard, E3/E5).
Posted Dec 01, 2025 - 14:42 GMT
Investigating
We’re aware of jobs failing with the error “The HTTP request was forbidden with client authentication scheme 'Anonymous'.”