I believe the following statement contained in the article referenced by Zack Mutchler is precisely what you are looking for. While it may be technically possible to create a least privilege user account for monitoring domain controllers via WMI or RPC, Microsoft has made the process so incredibly difficult that in most cases it requires the assistance of Microsoft support to get working properly.
Note: This article is for educational purposes only. SolarWinds Technical Support cannot assist with the creation of a least privileged Windows user account, nor the assignment of permissions to such a user account. For assistance configuring Microsoft Windows’ user account permissions, please refer to Microsoft Technical Support at:http://support.microsoft.com/contactus/).
For troubleshooting purposes, you may be asked by SolarWinds support to utilize a local or domain administrator account solely to eliminate possible permissions related issues as the cause of polling errors.