MOM Reporting Installation Issue
Error Message:
Failed to create data source for data warehouse. An exception occurred.
Check that you can access the SQL Services Reporting Server from this
machine. Error Code : -2147467259 (Unspecified error)
Workaround:
1. Open Registry Editor.
2. In Registry Editor, locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
3. Right-click "Lsa", point to "New", and then click "DWORD Value".
4. Type "DisableLoopbackCheck" for the name, and then
press ENTER.
5. Right-click "DisableLoopbackCheck", and then click "Modify".
6. In the "Value data" box, type "1" to enable it, and
then click "OK".
7. Quit Registry Editor, and then restart your computer.
Source: My 9th Microsoft KB Article