Forum Discussion
File Sharing between licensed account holders
From a starting point of this year, we have been finding that any to most file shares that happened between licensed MS account users are being flagged and quarantined by the anti-malware policy. Thi...
This is well known and you may configure custom quarantine policies, enable notifications, and report false positives via the Defender portal. This reduces manual monitoring and ensures legitimate collaboration is not blocked.
https://learn.microsoft.com/en-us/defender-office-365/quarantine-admin-manage-messages-files
https://learn.microsoft.com/en-us/defender-office-365/quarantine-policies