FreeFileSync Forum

Looks like the 24H2 update introduced a new error code. Can you test the following version and see if you get the login dialog just like before with 23H2: https://www.mediafire.com/file/fjfgozkwn3ibmz4/FreeFileSync_13.8_%255BBeta%255D_Windows_Setup.exe


Ok, first: Success.

You didn't specify ...

In Windows 11 24H2, we've made two major security changes that can affect mapping drives to third-party consumer NAS or routers with USB storage:

1) By default, SMB signing is required on all connections. This increases your security by preventing tampering on the network and stops relay attacks ...

W11 upgrade to 24H2 - Error code 0x4f8: policies block unauthenticated guest access and only FFS but not Windows mapped drives for example.

FreeFileSync 11.1 and 13.7

W11 23H2 no issues with FFS > login box appears > enter credentials and continue. All good no problems.
W11 24H2 after upgrade no ...