When using Configuration Manager Remote Control to manage SCCM Clients, user is asked for credentials. After authenticating, Access Denied error is received even if user is member of Permitted Viewers list specified in the Remote Tools Client Agent properties.
After investigating this issue, it turned out that DCOM was not enabled on affected computers. In order to enable DCOM, use the following procedure on computers that are experiencing this problem:
1. Open Component Services mmc. Start ->Run -> dcomcnfg.
2. Expand Component Services -> Computers -> My Computer.
3. Right click on My Computer and select Properties. Go to the Default Properties tab. Make sure that “Enable Distributed COM on this computer” option is enabled. Set Default Authentication Level to Connect and Default Impersonation Level to Identify.