Unable to add Active Directory group in SharePoint

SharePoint Users are usually Active Directory Users when using SharePoint in intranet. A strange thing I came across was I was able to add individual AD users in SharePoint but when I was trying to add an AD group, it said "No exact match found." Even though the AD group is present in the domain's active directory.

•  Now to resolve this issue, browse to the Active Directory and right click the group to open it's properties.
• On the General tab, find the section Group Type.
• If it is set to Distribution, change that to Security.
• Now you should be able to add the AD group into SharePoint.

For details regarding Group Types, refer Microsoft TechNet Site here.

In brief:

Distribution Group

This is used only with e-mail applications (like Exchange) to send e-mails to a group. This is not security enabled.

Security Group

To give an AD group controlling access to shared resources, you need to use Security Groups. A concept called discretionary access control lists (DACLs)

Hope this helped!