windows server 2008 r2 180 days trial activating

[arondeve]

i can't activate windows server 2008 r2 180 days trial after 2021. anyone have found a solution for this?

[#2]

Use KMS activation or need a separate Licensing Edition. Refer to the following article to activate

https://docs.microsoft.com/en-us/windows-server/get-started/kmsclientkeys

Operating system edition	KMS Client Setup Key
Windows Server 2008 R2 Web	6TPJF-RBVHG-WBW2R-86QPH-6RTM4
Windows Server 2008 R2 HPC edition	TT8MH-CG224-D3D7Q-498W2-9QCTX
Windows Server 2008 R2 Standard	YC6KT-GKW9T-YTKYR-T4X34-R7VHC
Windows Server 2008 R2 Enterprise	489J6-VHDMP-X63PK-3K798-CPX3Y
Windows Server 2008 R2 Datacenter	74YFP-3QFB3-KQT8W-PMXWJ-7M648
Windows Server 2008 R2 for Itanium-based Systems	GT63C-RJFQ3-4GMB6-BRFB9-CB83V

[#3]

It never was a supported move to convert 2008 evaluations to licensed. You'll need to use the licensed installation media that came with the product key purchase.