Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

CSRadius service will not start

ACS 4.0 and Windows 2003 server.

The CSRadius service will not start automaticly, and after a reboot we have to start the service manually.

The evenlogs says this:

EventID:7000 Source: Service Control Manager.

The Open Procedure for service "CSRadius" in DLL "C:\Program Files\CiscoSecure ACS v4.0\bin\rad_mon.dll" failed. Performance data for this service will not be available. The Status code returned is the first DWORD in the attached data.

And then this one:

"The CSRadius service failed to start due to the following error:

The service did not respond to the start or control request in a timely fashion. "

Any suggestions ?


Cisco Employee

Re: CSRadius service will not start

Make sure that you are not using multiprocessor/hyperthreading on the machine.

Also you do no have SP2 R2 of win 2003 installed, these are not supported environment.

Also remove the logs from following folder


Then restart the service


New Member

Our Cisco ACS on Windows 2003

Our Cisco ACS on Windows 2003 server has been online for more than 9 years (!), but we recently decided to convert it to virtual, so we noticed this problem/bug: CSRadius and CSTacacs services failed to start automatically after reboot.

My solution does not require anything from TAC. I just told Windows not to start these services immediately when it boots but start them a few minutes later. In detail:

  • From services.msc I changed these services from "Automatic" to "Manual"
  • Created a bat file with the following commands (in bold):

timeout /t 300      ===> Waits for 300 seconds - it is crucial, otherwise you may still have the same problem

net start CSRadius

timeout /t 10      ===> Waits for 10 seconds - may not be necessary, but just to be safe

net start CSTacacs

  • Created a scheduled job that runs the bat file every time the server starts

I hope this helps any other "old-timers" like me run into the same problem :)

Re: CSRadius service will not start

Please read details about this bug,

If services start successfully manually, but not automatically.

CSCsb81671 : CSTacacs and CSRadius services fail to start with Windows 2003

Workaround is to get a file from TAC, and apply it on ACS.