Before upgrading the OS of your Lansweeper server we recommend you back up your Lansweeper installation following
this guide.
Depending on the process behind the upgrade your Lansweeper installation should be functional after the upgrade. Windows Server 2012 R2 is fully compatible with Lansweeper. You can find more information on OS compatibility with Lansweeper in
this article.
Should you require to restore your installation from a backup, you can follow
this guide.
If you have any unexpected issues after upgrading your OS you could always contact support directly at support@lansweeper.com.