Cumulative Update 23 (CU23) is the final, full installation version for Microsoft Exchange Server 2016, which reached end of support on October 14, 2025. It is highly recommended to migrate to Exchange Server 2019 or Microsoft 365, although CU23 remains necessary for patching legacy environments. For the download and full details, visit Microsoft Download Center
Method A: Slipstream the CU (Recommended) microsoft exchange server 2016 download 64 bit iso fixed new
Method B: Install RTM + Immediately Apply CU Cumulative Update 23 (CU23) is the final, full
Exchange Server 2016 and Exchange Server 2019 End of Support Go directly to Microsoft’s site or VLSC