There were no less than three messages that indicated that OneDrive synchronization of Windows Server 2008 R2 will no longer be supported as of August 20, 2021. The extended support for it has already been unavailable since January 2020.
Of course, Microsoft knows that there are still Windows Server 2008 R2 in use. But clients running on unsupported versions can still run, but their functionality will no longer be tested and they may be locked down at a later date. It is not recommended to continue running on these unsupported operating systems.
Bugs and issues found on or specific to unsupported operating systems will no longer be investigated or fixed. This is to be considered under the circumstance that OneDrive Sync Client are automatically updated to new versions, but a test is no longer performed at Microsoft.
Recommendation from Microsoft:
To ensure a smooth transition, we recommend that you upgrade your machines accordingly. Machines running on Windows Server 2008 R2 should be upgraded to Windows Server 2016 or Windows Server 2019.
Current system requirements:
32 bit or 64 bit versions on
- Windows 7
- Windows 8/8.1
- Windows 10
- Windows Server 2008 R2
- Windows Server 2012 and 2012 R2
- Windows Server 2016
- Windows Server 2019