troubleshooting Question

SonicWall SSL-VPN Virtual Office Issue

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I'll keep it as short as possible.

Main Site - SonicWall TZ300 Firewall - Licensed for SSL VPN usage
Branch Site - SonicWall TZ300 Firewall

Site-to-site VPN tunnel set up and functioning correctly.

Via SSL-VPN Clients (NetExtender or Mobile Connect): Can access resources at both locations with no issues.
Via SSL-VPN Virtual Office (vpn.domainname.com): Can only access resources at main site. When we try to connect to anything at the branch site, it just hangs and says that it can't reach the server.

Issue is that we need staff to be able to access an RDS server located in the branch site via Virtual Office RDP bookmark. We previously had an older TZ210 firewall at the main site and we could access resources at both location via any VPN method including Virtual Office RDP bookmarks. I exported the config from the TZ21`0 and imported it to the TZ300 so I had to do minimal config (mainly just importing and applying the SSL-VPN SSL cert in to the TZ300).

I reached out to SonicWall support and got someone that did not convince me with his response. After capturing packets and looking at some other items, he said that "Virtual Office does not work over site-to-site VPN" and simply said that if it worked with the TZ210, it's unsupported.

I find that hard to believe and was wondering if anyone has ever run in to anything similar or is familiar with SonicWalls at all to assist. Thank you in advance!
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