EXCHANGE SERVER BUILD NUMBERS AND RELEASE DATES

To view the Exchange build number for the version of Exchange 2013 using Exchange Management Shell.

Get-ExchangeServer | Format-List Name, Edition, AdminDisplayVersion

To verify and check the version, you may refer to URL below;

http://technet.microsoft.com/library/hh135098.aspx

IP SUBNET CALCULATOR ONLINE

IP Subnet Calculator Online

http://www.subnet-calculator.com/subnet.php?net_class=A

THE GUI METADATA CLEANUP UTILITY USING VBS SCRIPT

Useful tools for AD metadata clean-up and it's easy to use. 

Refer to URL Below;

https://gallery.technet.microsoft.com/scriptcenter/d31f091f-2642-4ede-9f97-0e1cc4d577f3

Verified on the following platforms

Windows Server 2012	No
Windows Server 2008 R2	Yes
Windows Server 2008	Yes
Windows Server 2003	Yes
Windows 8	No
Windows 7	No
Windows Vista	No
Windows XP	Yes
Windows 2000	Yes

FORCE DEMOTE DOMAIN CONTROLLER SERVER

1.  Login to the correct server (server to demote) and open the command prompt.  With go to Startmenu>Run> type CMD.

2.  At a command prompt, type the following command dcpromo /forceremoval and then press ENTER.

3.  On the Active Directory Domain Services Installation Wizard, click Yes.

4.  On the Welcome to the Active Directory Domain Services Installation Wizard page, click Next.

5.  On the Force the Removal of Active Directory Domain Services page, click Next.

6.  On the Administrator Password page, type and confirm a secure password for the local Administrator account, and then click Next.

7.  On the Summary page, review your selections.  Click Next to remove AD DS.

8.  After finished, reboot the server.