If you encounter Proxy Authentication Error 2606 in OneDrive, follow the solutions below. The Proxy Authentication error can result from a network glitch. We should ...

Increasingly, whether due to regulatory requirements or a basic recognition that static passwords just don’t provide adequate security, organizations are ...

Can't you add machine accounts to the autheticated users on the ISA server? Or better yet, use Domain Computers group. That would allow access for all system accounts on all computers.