Hi Wendy Gordon,
Thank you for posting in the Q&A Forums.
Microsoft has acknowledged the issue and is actively seeking a solution.
Efforts are underway to restore proper access to the affected shared folders. Initial steps include investigating the root cause of the issue and implementing fixes to ensure that the shared folder displays correctly as a folder in File Explorer.
A full analysis is being conducted to determine the exact cause of the issue. Initial findings indicate that there may have been a configuration error or a recent update that affected the shared folder handling and synchronization process.
Please wait for Microsoft engineers to fix this vulnerability and then normal work can proceed.
Best regards
NeuviJ
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