To ensure the installer executes without an OS check block, run it via an elevated command prompt.
(Note: For enterprise or multiple-server deployments, consider the OneDrive for Business MSI distributed via Microsoft Endpoint Configuration Manager or Intune.)
However, according to official Microsoft documentation, the sync client is indeed supported on Windows Server 2012 R2. This is where the conflict arises. To bridge the gap between official policy and installer reality, you must use a version of the sync app that was released before this compatibility check was added. onedrive download windows server 2012 r2 exclusive
Most modern OneDrive versions (Production ring) will flat-out refuse to install. The "secret" version that community members found worked most reliably is from the Deferred ring . This version was the last stable bridge for older kernels.
Authenticate with your enterprise or personal Microsoft credentials. To ensure the installer executes without an OS
To connect your server directly to your OneDrive account, you need your unique Customer Identification (CID) number.
Exclusive Guide: Installing OneDrive on Windows Server 2012 R2 To bridge the gap between official policy and
Windows Server 2012 R2 does not enable the WebDAV client by default. You must install the Desktop Experience feature to allow network mapping to web URLs.