Issue with folder sharing Windows 11

I have two laptops one was Windows 11 and the other was Windows 10 I shareing working on both of them perfectly. I recently upgraded the Windows 10 to Windows 11 and now I've got a issue with file sharing it will file share from the old windows to the new one but not from the new machine to the old one I get a when I double click on their machine that comes up in networks It brings up a log on box and it just won't accept anything I put into this box any help would be greatly appreciated,