Cannot get ConnectWise (formerly ScreenConnect) to access sites

We can point you in the right direction to get assistance with ConnectWise, Oaklands.

We recommend that you reach out to the team at our paid service, HomeTech. They provide 24/7 support for a range of networking issues, including 3rd party software and equipment.

If you need help with anything else, let us know. Thanks for visiting the AT&T Community Forums.

Aminah, AT&T Community Specialist

I wasn't expecting an answer where I have to pay for an answer.

We're here to help you with your connection, Oaklands.

We'd recommend you try to disconnect your 3rd party equipment from the AT&T modem, and then perform a factory reset to clear all the custom settings. This should help us determine if the concern is with your AT&T equipment. If it works normally, we'd recommend you use the IP Passthrough instead of port forwarding.

Having 2 different gateways broadcasting the public IP address at the same time may cause them to conflict with each other. Settiing up the IP passthrough will stop our gateway from broadcasting the public IP and will alow the 3rd party router to do it.

Let us know if this helps.

Yomi, AT&T Community Specialist.

I have already tried the IP Passthrough which is not a true bridge mode.  Nothing I tried in the IP Passthrough setup world work.

I have since setup my old Synology RT2600ac in bridge mode to accommodate my wireless devices upstairs.  ScreenConnect is still the only app that will not work.  I have the proper ports 8040-8041 forwarded to the computer on my network that houses ScreenConnect. This worked fine when my Synology was my main router.

People outside my network can connect to sites with no issues.  It is only computers inside my LAN that cannot connect to others. I can see the sites but cannot access them.  I get this error when trying to connect:

I would like to follow-up on my situation. I now have my Synology RT2600ac setup as an access point. It is now upstairs so my wireless devices will work. All control is done through the BGW320-505. I have forwarded the necessary ports to the computer hosting my Connectwise service. Computers on the internet can connect fine and login to remote computers. However, all computers on the Local Area Network cannot login to customers. I have researched this and cannot come up with any answers on why this is happening. The only time I can connect is if I restart the ScreenConnect Relay service running on port 443 and sometimes I get luck and make a connection. After the Relay service has run for a while I cannot.

Please keep in mind, the only change in my configuration is switching from Spectrum internet to AT&T. All connections worked 100% before the change.

I found a workaround for this. I turned on my VPN and connected via my DDNS site. The VPN has to block the local LAN for it to work. This isn't the best solution but it works.