My client has a site with five locations. They're connected via a site to site VPN using a mix of SonicWall TZ210s and TZ205s. Each location remotely logs into a Remote Desktop Server running Windows Server 2008 w/ SP2. As of this morning, none of the printer redirects are working. I have ensured that printer drivers are installed for a handful of the printers via the Print Server Manager. I've completely logged off users and had them log back in, and the printers are still not redirecting at all. Not every time, but every few times I have the user log back in an error 1111 is created.
What is causing the redirect to fail?