unable to connect my boards

[SoWhat]

Hello, for many years i have a homeseer system with arduino-enigmatheatre plug-in V.131 connected with 3 genuine arduino mega boards/Ethernet shield v2 all working flawless

For a new location i am building a system with a dedicated homeseer-pc (win10) and 2 genuine arduino mega boards/Ethernet shields v2

When i setup the boards up all goes well, only afterwards the plug-in can not connect to the boards, i can ping the boards address and get a response, also a network IP scan (with Fing network tools) finds the boards, so it seems to me that the boards are correctly connected to the network.

When i move/setup the same hardware (homeseer-pc and arduino boards) at my location already running a working homeseer system (see above) all goes well and i get a working system in no-time, and the system runs perfectly for many days without a board connection fault.

I have also tried the beta plug-in version .161, bit this gives no improvement either.

I think it has something to do with the different networks at the two locations, but i have not a clou what could be the reason and how to investigate and solve this.

I have little to non knowledge about network infrastructure and hope someone could point me to the direction how to tackle this problem

Help appreciated.

Kind regards,

Peet

[enigmatheatre]

Hi Peet,

My first thoughts would be to check if your firewall or antivirus is blocking the boards or the Arduino.exe.

If it is not that then please take a debug log from the new system and send it to me along with the sketch you have uploaded to the board.

Greig.

[SoWhat]

Hi Greig,

Thanks for your suggestion, it seems i have two firewalls running, after i installed Kaspersky Internet security (I prefer this one above Defender), it seems Defender firewall was still active.
For a short test i disabled both firewalls and then both arduino's connected without problems, i wrote a short program to generate I/O changes to see if everything keeps connected overnight.
I will than look into the firewall (kaspersky, Defender stays deactivated) rules to see which could cause blocking the connection.

What puzzles me, why the same homeseer-pc with both firewall's active, gives no problem when connected to another local network??, but that's something to look into after everything is running fine and stable

Another thing, i was looking for plug-in version .131 (the latest regular one?) but i could not find this at the Analog & Digital section, only the beta version .166 could be found in the beta section, luckily this works fine also

Again, thanks for your help

Peet