Network access dropped intermittently?

[Etihtsarom]

Hello,
What might be the problem when one machine on the network drops off intermittently while other machines' shared drives remain accessible? This is the error message that displays on the machines that try to connect to the HTPC's shared drives:

 

[Etihtsarom]

Ok The problem has been resolved. I enabled the Guest account on the HTPC and that messed everything up. Apparently, disabling the Guest account solved it. For those of you with the same problem.

 

[roban]

Thanks for the resolution.