Question : Cross Domain Authentication System Error 5

This really can't be that difficult, but I'm coming up empty so far.  Here is the scenario:

Domain A & B with 2003 DCs and validated trusts between the domains, connected by a VPN

Domain A can map drives to any admin share on Domain B without any problem, Domain B can only map to shares in Domain A, any other attemp to map or authenticate to anything in Domain A results in a "System Error 5 has occurred" error".  All I have to do is find out what it is in Domain B that allows it to access everything in Domain A, but not vice versa.

Thanks

Answer : Cross Domain Authentication System Error 5

You could try a different browser to see what results you get. If that is not an option, make sure that the version/service packs are the same on the browser they are using. If that's all working, you might need to see if there is any web proxying/caching occuring between your company and the site.