SQL Server 2008 hints that the evaluation period has been resolved (the upgrade is invalid)

Prompt window:

Steps to resolve:

The first step:Enter the installation center in the SQL2008 Configuration tool


Step Two:Re-enter the maintenance interface and select Version Upgrade


Step Three:Enter the product key, type the key


Fourth Step:Always point to the next step until the upgrade is complete.
SQL Server Developer (development): PTTFM-X467G-P7RH2-3Q6CG-4DMYB
SQL Server Enterprise Edition: JD8Y6-HQG69-P9H84-XDTPG-34MBB

Note:
If you select the "version Upgrade" General Prompt "failed" and require "restart the computer", please close the server in the process and other services.
If the above operation is not connected to the server, modify the system time (put the time ahead) or go down to see ↓↓↓↓↓↓
If the issue is still not resolved or if the evaluation period is over (it is said to be a bug that SQL2008SP1 is not installed))
1. Start-to-run-Regedit
2. After opening the registry, locate and put the CommonFiles in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL server\100\configurationstate Change the value to 3
3. SQL Server Installation Center, maintenance, version upgrade once again (because the database has been upgraded earlier, so this time only with the upgrade Share feature components------drop-down select to see)
4. After the above operation, your SQL Server 2008 is working again.

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