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[Issue] System Center 2012 Configuration Manager RTM Upgrade to SP1: DMP Proxy is not responding to HTTP requests

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Recently I tried to upgrade my System Center 2012 Configuration
Manager RTM hierarchy to SP1, and found that the Device Management Point was
down after the upgrade. In the site console monitoring->component status, the
SMS_MP_CONTROL_MANAGER turned to critical and showed the error message: “DMP
Proxy is not responding to HTTP requests.” And there are also error messages in
mpcontrol.log: ”Call to HttpSendRequestSync failed for port 443 with status
code 500, text: Internal Server Error.”, and reinstall the DMP would not fix
this issue.

Then I tried to run the “\Windows\Microsoft.Net\Framework64\v4.0.30319\aspnet_regiis.exe
–i” to refresh the ASP.net and IIS configuration, now the issue was resolved, the
DMP request is back to normal!

 

Thanks,

Fei