Remote Desktop Services (RDS) license key depends on whether you are looking for the key to the server or trying to retrieve an already
- Sign in to Microsoft 365 Admin Center → Billing → Your products → Volume licensing
- Locate the RDS CAL subscription or perpetual license
- The license key may appear there or in the VLSC linked to your tenant
Cloud Solution Provider (CSP) token or entitlement
Step-by-Step: What to Do When You Need the Key for a New Server
- First, check VLSC – download the actual product key if available.
- No VLSC? Look up the Key Pack ID from the old license server via
licmgr.exe.
- Use the Key Pack ID to perform a license move or reclaim: