can't connect with RDP until ping

[Mumo]

The VPN connection works and to 90% of all clients, RDP works fine after VPN is connected. But there are some clients that i have to ping first, and after that, RDP works.
nslookup, tracert and ping from my client to the remote client is ok. from the remote client tracert and ping my client also works. so i think there is not a routing problem. I found the topic viewtopic.php?t=10753 but thats not the solution for my problem i think.

hope someone can help me, where i find a solution for this problem.

thank you

btw: sorry for my english

[novaflash]

Sounds like some weird firewall issue or IP conflict to me to be honest. I don't think there's anything in OpenVPN that can cause this.

[Mumo]

Thank you for your reply. I checked my firewall and found an active RDP NAT for the target client. I have deactivated the entrie and know it works.

[novaflash]

That's great