One day, on one of my Exchange servers, Users are not getting their E-mail Address field populated. Here are the detail event logs.

Event ID: 9186

Event log: MSExchange SA, Microsoft Exchange System Attendant has detected that local computer is not a member of group ‘cn=Exchange Domain Servers,cn=Users,dc=..,dc=com’. System attendant is going to add the local computer into the group.

Event ID: 9187

Event log: MSExchange SA, Microsoft Exchange System Attendant failed to add the local computer as a member of the DS group object ‘cn=Exchange Domain Servers,cn=Users,dc=..,dc=com’. Please stop all the Microsoft Exchange services, add the local computer into the group manually and restart all services.

How I Fixed it: I simply remove and re-added the Exchange server to “Exchange Domain Servers” group. I also configured the Exchange server to use a different domain

On Hyper-V Manager, you will get this message "An error occurred while attempting to change the state of virtual machine" When Powering on the VM while your VHD is ready only.

This error also occur when you try to "swap" the VHD, Hyper-V will not allow that. You must change the VHD from the settings menu.

As you may already know Server 2008 is designed be secure out of the box. This means there are a lot of features that are inconvenience to users. Server 2008 default password policy is one of them, It requires a super complex password. It is pretty easy to change the default policy.

1. Open Group Policy Management Console, Start > Run > gpedit.msc
2. Expand Computer Configuration > Windows Settings > Security Settings > Account Policies > Password Policy
3. From here you see change the password complexity requirement and other related settings.

Someone asked me why their default DNS server is unknown while performing nslookup. This is simply because their PTR(reverselookup record) is missing from reverse lookup zone. if you cannot perform reverse dns lookup on your DNS server IP address, default server field will be unknown.

It would be nice to Install Exchange 2007 sp1 prerequisites on Server 2008 from command line. You can create a script / batch file with commands below. This will automate the Installation of  Exchange 2007 sp1 prerequisites on Server 2008.

1. Open notepad

2. Copy and paste below text to notepad

3. Save the file with .bat extension.

rem # ---------- SCRIPT STARTS HERE--------------

rem #script to install ex2k7 sp1 prereqs on Server 2008
rem i#nstall IIS for management tools

ServerManagerCmd -i Web-Metabase
ServerManagerCmd -i Web-Lgcy-Mgmt-Console


rem #install powershell
ServerManagerCmd -i PowerShell

rem #install IIS
ServerManagerCmd -i Web-Server
ServerManagerCmd -i Web-ISAPI-Ext
ServerManagerCmd -i Web-Metabase
ServerManagerCmd -i Web-Lgcy-Mgmt-Console
ServerManagerCmd -i Web-Basic-Auth
ServerManagerCmd -i Web-Digest-Auth
ServerManagerCmd -i Web-Windows-Auth
ServerManagerCmd -i Web-Dyn-Compression

rem #install the RPC over HTTP proxy feature
ServerManagerCmd -i RPC-over-HTTP-proxy

rem # ---------- SCRIPT ENDS HERE--------------