vss安装的问题:提示'UM.dat may be corrupt'

安装完毕了，但是不管运行VSS还是VSS ADMIN，都弹出错误说UM.DAT MAY BE CORRUPT.怎么解决？谢谢！

To resolve this problem, build a new Um.dat file. Note that when you build a new Um.dat file, you must add all of the users again.

To build a new Um.dat file, follow these steps: 1. Create a temporary folder named C:/Sstemp.
2. Click Start, click Run, type cmd, and then click OK.
3. Go to the VSS/Win32 folder in the command prompt window, and then type the following command:
mkss c:/sstemp
4. In the VSS/Win32 folder at the command prompt, type the following command:
ddconv c:/sstemp
5. In the VSS/Win32 folder at the command prompt, type the following command:
ddupd c:/sstemp
6. Copy the Um.dat file from the C:/SStemp/Data folder to the Visual SourceSafe data directory.
7. Rename the Rights.dat file in the Visual SourceSafe data directory as Rights2.dat.
8. At a command prompt, run the analyze -f command against the database.
9. Add all of the Visual SourceSafe users again.
10. Reassign rights to the Visual SourceSafe users.

主要是2，3，4三步，重新生成数据库文件，4步骤可以不用。将前面生成的内容拷贝到VSS的安装目录下面的data文件夹中，不用5在命令行下运行，直接运行VSS工具：Analyse VSSDB即可。

其后就可以登陆了，此时默认用户名admin，密码为空，进去之后可以设置用户权限