Creating a new Active Directory Site Might make your Exchange 2010 stop working

If you have Exchange 2010 in your Site , If you create a new Active Directory site , your Exchange may stop working ,

We will see why ?

Having only the Default-First-Site-Name, You would have not Define the subnet for your site,

If you have only one site , Which is the default website then All the subnet will look into your Default Active Directory site (Default-First-Site-Name)

But if you create a new site then your Exchange won’t know which site to look into , because of the not defined subnets

and Your services may stop and Restarting the server might struck in  “Applying computer settings”

To avoid this situation,Before your Create a new Active Directory site

Define the Subnet for your your Default Active Directory site (Default-First-Site-Name)

Now you can type the specific subnet

Now your Subnet is defined to your  Default Active Directory site

Great !!

Now you can overcome some downtime !!