MC240203 – Updated April 06, 2021: Microsoft is targeting the new update to roll out by mid-April. With the improvements in our next release (version 12.23), customers will be able to write and read to OneDrive files under the Files folder in iOS Files app. The Shared folder will remain in read only mode. Thank you for your patience.
Note: If your organization is not using OneDrive on iOS you can safely disregard this message.
Microsoft has detected a problem with the OneDrive iOS Files App integration experience. While the team investigates the issue, the OneDrive iOS Files app integration will be placed into Read Only mode to prevent future changes from being lost without proper save.
How this will affect your organization:
Beginning with OneDrive iOS version 12.18+ on iOS and iPadOS devices, the Files app experience will reflect that writes cannot be made at this time and will prevent end-users from editing files or folders from the Files app. End users will also temporarily be unable to save items to OneDrive using the “Save to Files” command in the iOS Share sheet.
What you need to do to prepare:
You may consider notifying your users and updating any documentation as appropriate.