WIN7 Unable to access Windows 2003 Server shared file solution

Company file server for windows2003, installed for 10 years has been running stable. After the XP system exits the history stage, the client WIN7 system is universal. The problem occurs: Win7 cannot access Windows 2003 shared files, but windows2003 can access the Win7 system.

Win7 can also visit each other, check to find out the original is a local policy problem.

Workaround:

1, click Start-In the search field input: secpol.msc (or directly press the WIN+R key, input secpol.msc),

Open the local security policy.

2. Find security options for local policy in security settings

3, in the right column to find "network security: LAN Manager Authentication Level", double-click to enter

4, in the default state option, the English version should be "no defined", the Chinese version is empty.

Drop down the default option, select Send NLNTLM appropriate only