You need to change the password every 30-90 days, and you would like to know how to change the password without impacting CCS 11.
NOTE: This method requires that you are NOT going to be using a new user, and you know the Passphrase that was set when CCS was installed.
Windows 2008 (R2)
Windows 2012 (R2)
On the CCS 11.x application server
If during the configuration you recieve a pop-up error that the account requires SYSADMIN, just ignore the error and continue. SYSADMIN level permission is not required.