I had someone ask me how to best update the AD RMS service account password. As we started mulling over it we realized that this is more than just a domain account that we change the password in the services mmc. Some of this information may be in the AD RMS configuration database, there is a web application pool account, and so on.
Poking around the AD RMS management console I found the “Change Service Account” wizard. Looking though this wizard it came across to me as what we use to change the account, but I wasn’t sure about updating the existing one.
Digging around my RMS lab and going through some resources I found the answer. The “Change Service Account” wizard is the answer. It updates all the needed items. I’ve written it up on the wiki so check it out!
AD RMS How To: Change the RMS Service Account Password