I'm seeing the error: "An error occurred while loading resource event data retention settings" when accessing the Purging Maintenance page.
Configuration > Server Settings > Notification Server Settings > Purging Maintenance.
The purging page will display this error when trying to access the page, but the scheduled process that runs the purge appears to still work in the background. The purging will use the default settings of 180 days, or 1,000,000 rows.
Inner exception. Type=Altiris.NS.Exceptions.AeXException Msg=Unable to lookup the SID associated with the specified account (Code: 0x000006BA) Src=Altiris.NS StackTrace= at Altiris.NS.Security.SecurityTrusteeProvider.LookupSidFromName(String scope, String name)
at Altiris.NS.Security.SecurityTrusteeManager.GetTrustee(String scope, Int32 authenticationType, String authenticationName) )
0x000006BA = The RPC server is unavailable.