Issues connecting to Win7 computer across network with 5th gen Kindle Fire...

[AC Question]

I am running Win7 Pro 64 bit on my desktop computer which is hardwired to my network. I have a Kindle Fire and whenever I try to browse across the network and access the Win7, I can see it but I cannot open it. I always get a bad path or general login failure message on the Fire using apps like ES File Explorer or Solid File Manager. I can browse to and access the Win7 from any other computer on the network so the problem seems to be with the Kindle-Win7 interface. The Kindle has no trouble whatsoever browsing to and accessing a computer running XP Pro 32bit that is wirelessly connected to the network. I've tried several different file management apps on the Kindle and I have to admit I'm stumped. I'm beginning to wonder if it's some sort of bug in 7 64 bit, the Kindle OS, or both. Any thoughts on this would be appreciated.