Bitdefender Internet Security blocks CAD- program

Hi there!

I´m a bit lost trying to troubleshoot a problem with my CAD-Program and Bitdefender Internet-Security on my Win 11 pro -Laptop.

My CAD-program (Megacad 2021) tries to connect to a server online to get the licence-key on every start (or alternatively I can download the license for max. 14 days). I can only do so if I switch off everything on BT-IS prior to starting the CAD. Otherwise the CAD promps "License-server not found". Lately it does so even during running the offline-license.

I tried to give exceptions for the CAD-program and the license-subprogram in BT IS but seem not to find the right spots. The Commandcenter does not show anything in the alert-section

Is there something like a protocol in BT-IS where I can see which programs have been blocked at a certain point of time?

Thanks for any hints how to solve this problem 🙂

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Scott

Hi @FlotheCarpenter

That sounds more like an outbound connection issue, a Firewall issue? If you haven't already tried it, enable Alert mode in the Firewall settings, restart your PC then access your CAD software and see if you get a Bitdefender pop-up to allow that connection.

Kind regards.

FlotheCarpenter

Hi Scott, thanks for your advice which I tried out for several weeks now.

I never got a pop-up out of the Alert mode for my CAD-Program. But that might be because I allready excluded that program both in Virus protection and in Threat defense.

Strangely I only manage to start the CAD-Program if I first turn Bitdefender completely off and reboot the computer. Without the reeboot I still would get a error-message promping "License-server not found"…

Funny thing is: on my Laptop I have this problem, on my PC (also WIN11, Bitdefender, same CAD) everything runs smoothly🤔

Any Idea what might cause my Laptop to act like this?

Scott

Hi @FlotheCarpenter

I'm not sure, but if you wanted to, try the steps in temporarily disabling Bitdefender and see if that helps. It could then be a process of elimination on which module may be interfering with the outbound license confirmation.

https://www.bitdefender.com/consumer/support/answer/28557/

But I can relate, as I had for years run a CAD software on my end called 3Shape. It's a Dental lab software for designing crown and bridge, implants etc, so the dongle would check the subscription status as well when I restarted that tower PC. The only issue I had with Bitdefender on that PC was it wasn't honoring the exceptions I created, and was causing slow downs or pausing issues of the software but that connection was not affected. I never did check it on a Notebook, as I'm now retired and sold that hardware (dongle) and PC.

It also may come down to contacting Support, and submitting log files if needed (I'll let them guide you though that if needed)

Support can be reached from here. Tick the How To's and Troubleshooting Bitdefender and go through the prompts until you get to the Contact Support button. You will be given 3 support options, Chat can be the quickest way to get things resolved, or to at least head you in the right direction (phone support is not toll-free).

https://www.bitdefender.com/consumer/support/help/

Kind regards.

FlotheCarpenter

Hi Scott, thanks for your advice, it´s highly appreciated!

My thoughts go into the same direction. Bitdefender might slow down the outbound request to the license-server a tiny bit thus creating the problem. The other computers are on a LAN network, the Laptop ist on WLAN, so that might be a factor there as well.

I will need to go through the elemination process even though that is going to be awfully time-consuming because of the reboots needed.

Will give you an update as soon as I know more

FlotheCarpenter

Hi Scott,

I managed to define Bitdefender Firewall as the culprit.

the process for solving the problem looks like this:

-disable BD Firewall

-reboot the laptop

-start the CAD-program

Long time ago I tried to ad the CAD-Program to the exceptions for the Firewall but that apparently did not work - or BD needs too much time to handle the request of the license request and that is why I get the timeout message from my CAD-programm.

I will try to continue fiddling with BD Firewall since I want to have a working Firewall on the laptop. If you have any additional ideas in that direction just throw them at me, they would be highly welcome ;-)

Thank you for your help!