Where Are My Saved Server List?

For SQL 2005:

C:\Documents and Settings\<USER>\Application Data\Microsoft\Microsoft SQL Server\90\Tools\Shell\mru.dat

For SQL 2008:

C:\Documents and Settings\<USER>\Application Data\Microsoft\Microsoft SQL Server\100\Tools\Shell\SqlStudio.bin

So...

  1. Shut down all instances of SSMS
  2. Delete/Rename the file
  3. Open SSMS

Source: https://serverfault.com/questions/278582/ssms-where-does-sql-server-store-its-server-names