In WIN7, the MD5 authentication method has been considered to be insufficient for security reasons to be disabled. to activate it, open the registry and add it at the following position:
The specific method is as follows:
Enter regedit in the running directory to open the registry and find the location:
Location: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ RasMan \ PPP \ EAP \
Create: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ RasMan \ PPP \ EAP \ 4
Key: RolesSupported
Type: REG_DWORD
Key Value: 0000000a
Key name: FriendlyName
Type: REG_SZ
Key Value: MD5-Challenge
Key: Path
Type: REG_EXPAND_SZ
Key Value: % SystemRoot % \ System32 \ Raschap. dll
Key: InvokeUsernameDialog
Type: REG_DWORD
Key Value: 00000001
Key: InvokePasswordDialog
Type: REG_DWORD
Key Value: 00000001
Everything is OK. Do not forget to enable other related services if necessary.
PS: Dangerous to modify the Registry. Please do it yourself !!!