Problem:
==========
While trying to install agents in SCOM SP1 setup we were getting error as “SPN error: event id 21001 and 20057 with source OPS mgr connector”

Cause:
=====
Duplicate SPN’s was causing this issue.

Resolution:
=========
We manually deleted the duplicate SPN’s.

You can refer to the Method 1 listed in the following KB article:
http://support.microsoft.com/kb/321044

Method 1: Use the LDP support tool

1. Click Start, click Run, type LDP, and then click OK.
2. Click Connection, and then click Connect.
3. Leave the default settings, and then click OK.
   Note If you do not receive the expected result, try another search by using the Global Catalog Port (3268) instead of the default setting (389).
4. Click Connection, and then click Bind.
5. Leave the default settings, and then click OK.
6. Click View, and then click Tree.
7. In the Tree View dialog box, type DC=YourDomain,DC=com in the BaseDN box, where YourDomain is your domain.
8. Click Browse, and then click Search.
9. In the Search dialog box, type DC=YourDomain,DC=com in the BaseDN box.
10. In the Search dialog box, type (serviceprincipalname=HOST/mycomputer.mydomain.com) in the Filter box. If the service principal name that is referred to in the error in the System log differs from this example, type the service principal name to which the error refers.
    Note If you do not receive the expected result, try searching for " HOST/" as opposed to searching only for the exact SPN in the event ID.
11. Under Scope, click Subtree.
12. Click Run.

PROBLEM:
============
Move Operations Manager 2007 RMS to new server.

RESOLUTION:
===========
Following are the steps to promote Management Server to RMS:

1. On the Management Server to be promoted, copy SecureStorageBackup.exe and ManagementServerConfigTool.exe from SupportTools folder of the installation media to the install directory (by default, C:\Program Files\System Center Operations Manager 2007).

2. Open a Command Prompt window and change directory to C:\Program Files\System Center Operations Manager 2007

3. Type the command: C:\Program Files\System Center Operations Manager 2007>SecureStorageBackup.exe Restore filename This file is the backed up Root Management Server encryption file required by this procedure.

4. Provide password as required.

5. On the Management Server, type the command: C:\Program Files\System Center Operations Manager 2007>ManagementServerConfigTool.exe PromoteRMS
If you get an error that this Management Server is configured for multiple management group and its not supported.

Check the following registry key HKLM\Software\Microsoft\Microsoft Operations Manager\3.0\Server Management Groups Parent Health Service Send Priority VHA SCOM
We backup the "Parent Health Service" and "Send Priority" Keys and deleted them.
Run the same command again, and it should work

6. If the original Root Management Server is to be demoted to being a Management Server, on the original Root Management Server, type the command: C:\Program Files\System Center Operations Manager 2007>ManagementServerConfigTool.exe UpdateDemotedRMS

7. Go to the promoted Root Management Server, open the services snap-in, and stop the MOM HealthService.

8. Go to the installation directory (default: %ProgramFiles%\System Center Operations Manager 2007) and delete the Health Service State folder.

9. Start the MOM Health Service.

10. When you open the Operations Console the first time, specify the name of the new Root Management Server to connect to.

Reference:
============
How to Promote a Management Server to a Root Management Server Role in Operations Manager 2007
http://technet.microsoft.com/en-us/library/cc540401.aspx

在Windows Vista裏，只要點選「開始」，直接輸入關鍵字的話，即可以蒐尋硬碟裏的檔案以及使用IE的搜尋直接在Internet上尋找，但在Windows 7裏，各位會發現此功能消失了。以下的方式是讓該功能再從Windows 7上新增進來。

1.執行gpedit.msc。

2. 找到「使用者設定」>「系統管理範本」>「『開始』功能表和工作列」。

3.在右方找到新增「搜尋網際網路」連結到「開始」功能表，將它改成啟動。

4.之後，在左下角的「開始搜尋」裏輸入關鍵字，即會出現「搜尋網際網路」。