Maybe everyone has encountered similar problems. In the LAN system under Win7 system, there is a problem that shared files cannot be accessed by each other.
Windows 7 uses a Windows encrypted sharing method that is different from older versions. This not only improves the security of network sharing, but also creates obstacles for mutual access to Windows shares between different versions. Sometimes, although shared files can be viewed by each other, many times, users can only stay at the "discovery" level and cannot copy or cut shared files.
In order to simplify the excessive description, the author recommends that you first understand the problem of "XP/Windows7 files cannot be accessed and shared".
Normally, if you have confirmed that "Network Discovery" and "File and Printer Sharing" are enabled on the current system, and "Password Protected Sharing" has been turned off. (Check it in "Network and Sharing Center → Advanced Sharing Settings"), but when accessing shared files, you still cannot access them normally. This is most likely because non-Windows 7 versions of the system do not support 128-bit encryption.
Open "Control Panel → Network and Sharing Center → Advanced Sharing Settings", and in the "File Sharing Connection" area, change the system default selection to "Enable shared files for devices that use 40 or 56-bit encryption."
Enable "Enable shared files for devices that use 40 or 56-bit encryption" in Windows 7
After modification, save the settings and exit.
Little knowledge, what is 128-bit encryption?
There is no fixed term for 128-bit encryption. Generally, 128-bit encryption is commonly used on servers. Obviously, Microsoft is introducing this to non-server users to improve the security of shared files.
Generally, server certificates are divided into two levels based on encryption strength, namely low encryption level and high encryption level. Low-end encryption strength is 40-bit or 56-bit, and high-end encryption strength is 128-bit or 256-bit. At the server level, whether users using low-end encryption can access high-end encryption does not entirely depend on themselves, but also depends on the client operating system, browser version, and network server (certificate used). For example, even if the user's current system does not support 128-bit-strength encrypted links (i.e., high-end encryption), even if the server certificate can support 128-bit, the client will automatically reduce the encryption strength.