Windows 7 system mutual access shared file problem solving method

Windows 7 uses a different way of Windows encryption sharing than the old version, which improves the security of network sharing, and also brings obstacles to Windows sharing and mutual access between different versions. Sometimes, although shared files can be viewed from each other, in many cases, users can only stay at the "discovery" level and cannot copy or cut shared files.

To simplify the description, I recommend that you first understand the issue of "XP/Windows7 files cannot be shared with each other".

Normally, if you have confirmed that Network Discovery and File and Printer Sharing are enabled on your system, you have turned off Password Protected Sharing. (Viewed in "Network and Sharing Center → Advanced Sharing Settings"), but when accessing shared files, it still cannot be accessed normally. This is most likely due to the fact that non-Windows 7 versions of the system do not support 128-bit encryption.

Open Control Panel→Network and Sharing Center→Advanced Sharing Settings. In the File Sharing Connection area, change the system default selection to “Enable sharing for devices with 40 or 56-bit encryption”. "File", as shown below:

Enable "Enable shared files for devices with 40 or 56-bit encryption" in Windows 7

After the modification is completed, save the settings to exit.

Little knowledge, what is 128-bit encryption?

128-bit encryption does not have a fixed terminology. In general, 128-bit encryption is common on the server side. Obviously, Microsoft introduced it to non-server users in order 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. The low-end encryption strength is 40 bits or 56 bits, and the high-end encryption strength is 128 bits or 256 bits. At the server level, users with low-end encryption can access high-end encryption, which is not entirely dependent on themselves, but also on the customer 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 (ie, high-end encryption), even if the server certificate can support 128 bits, the client automatically reduces the encryption strength.

Edit Comment:

If you only look at the solution, you will definitely feel that "the problem is not solved clearly," but by understanding the 128-bit encryption, you will understand that Other versions of Windows have a problem of "mutual access to shared files" when accessing Windows 7.