SQL Server 2008 R2及以前版本:
http://blog.csdn.net/downmoon/article/details/5678468
SQL Server 2012:
删除这两个地方！请提前备份！
X:\Users\XXX\AppData\Roaming\Microsoft\SQL Server Management Studio\11.0\SqlStudio.bin
X:\Users\XXX\AppData\Roaming\Microsoft\Microsoft SQL Server\100\Tools\Shell\SqlStudio.bin
原文：http://www.cnblogs.com/linyijia/p/5581082.html