No Drive Letters Available When Attempting to Map a Network Drive

When you attempt to map a network drive, the box containing the drive letters does not have any letters available.

This behavior can occur of Symantec's Virtual Drive program (which simulates CD-ROMs) is installed on the computer. By default, this program creates the greatest number of virtual drives available. All the virtual drives created are visible in drive Z in My Computer.

To resolve this issue, use the Virtual Drive program to free up some of the virtual drives that are not being used. You can then map the network drive.

For more information about the Virtual Drive program, contact the manufacturer. Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.