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That did it. Shut everything down and changed the port for all the things to 9780 (the FMC addon didn't like 9080 for some reason) and now both the FMC and the StreamDeck work at the same time. Thank you! That was haunting me. Hope this helps someone else later who might have the same issue. Cheers!

Here is where I am stuck. I have the port set to 9780, but the StreamDeck Plugin is set to 9080. I cannot edit those two lines (StreamDeck of FIPs) to change them to 9780 or anything. And when I change the API port back to 9080, the StreamDeck starts working fine, and the FMC isn't working. (https://imgur.com/a/FaofVQJ) Image of AAO's port settings.

I am playing with the port setting now. I had set the webAPI port to 9780 and the FMC worked, but I can't seem to change the port for stream deck plugin via the "Tools>Set Web API Port for AAO Addons" menu. They are both grey'd out and I can't check the box on the left to update the port for them. Can I assign different addons different ports or does AAO just use one common port for all addons/plugins that are relying on AAO?

When I load into the aircraft, the StreamDeck profile shows up, but none of the buttons are interactable, they ones that show in-game info on the buttons (wind direction, light toggle states, starter switch positions, etc.) don't show any info on them. It's like AAO isn't sending any sim info to the StreamDeck profile. (https://imgur.com/a/8IdRKuf) There's an image of what it looks like when the FMC is working and StreamDeck isn't.

I have now posted a question to them about their addon, but if there is one that you know works, is that something that I could get a link to? I'm not set on using one addon over another, I would just like my FMC and StreamDeck to work at the same time.

I have been using the Stream Deck plugin for the PMDG 737-800 for a bit now and it works great. I have wanted to put the FMC on a tablet to make it easer to use in flight without going for my mouse and changing views, etc. So I got the addon from pilznille (https://flightsim.to/file/37664/axis-and-ohs-aao-fmc-addon-for-pmdg-737-for-msfs) and set it up, making the change to the .ini file for the aircraft and all that. Set the aircraft automated 737 CDU scrip on with the suggested 200ms delay and it all shows up on the tablet. Problem is, I can no longer use the stream deck. Once I disable to webAPI broadcast and restart the sim and AAO, the stream deck work, but the FMC broadcast does not. I cannot seem to get them to work in conjunction with one another. Thanks in advance for any advice or suggestions!

I completed the flight without any hangs. The only thing that was different (Besides the fresh install of MSFS) was that I set mouse, keyboard, and my collective to "Default" control settings and made sure there weren't any "autopilot" related control inputs on any of my controllers except AT and AP disengage keys. I will post here if it hangs again and I can add any new details to it.

Would there be any log files anything that could help sort out what is going on? Would eliminating all keyboard keybinds maybe help? I don't use they keyboard except to hit escape and exit. I am trying another flight tonight with it to see if things have calmed down. If I don't get a freeze, I will be happy. If I do, I will try and see if anything obvious happened beforehand.

Understood. Honestly, just habit of "turn it off and on again" thinking. Answer: Yes, I can go to the stream deck application and use the drop down to change the profiles to something else. However, the buttons still do not respond (it won't open another program or switch to a different profile using the buttons on the stream deck itself). This hand usually resolves itself after about 2 minutes or after terminating the application in Task Manager. So, not dependent on each other. Understood. I have begun the reinstall of MSFS 2020 on a new M.2 SSD (I had been meaning to move it for a while, so this was a good excuse to start fresh.) and that will start me with a clean install of all control profiles, all addons like PMDG, and hopefully it is like jason74 suggested and it's a "binding" issue where I had some kind of multiple input problem. I am running Windows 10, current on all my updates and driver versions for all hardware.

Okay. Where to start... I have the Stream Deck XL and Stream Deck Plus. I am running MSFS 2020. I am using the PMGD 737-800. I downloaded the AAO Scripts and StreamDeck XL & PLUS from Guenseli (https://el.flightsim.to/file/32434/pmdg-737-aao-scripts-streamdeck-xl-profile-alpha) and followed install instructions on his page to the letter. The entire setup fired up and worked great for about ten days. Two days ago, mid flight I encountered this issues I am having for the first time. THE ISSUE: In flight, (and on the ground at least once, so it's not something to do with flight) the Stream Deck will freeze up completely. None of the buttons will respond (not even the image depress animation that you get when pressing a stream deck button). But that's not all... for some strange reason that I can't imagine how it happens, the aircraft autopilot will start to follow a random course in a random direction when the freeze happens. And twice, when this has happened, the aircraft has literally nosed strait up or strait down and the toke is visibly being "held" in a direction. I do not have any buttons or axis' mapped through AAO, I am only running the PMDG 737 buttons scripts and the "PMDG_737MSFS_Data" that was included in the above link. If I disconnect and close AAO and Stream Deck's software, I still do not have Autopilot control until I turn it off, cycle the FDs and AT and then reenable everything via mouse input. This hang/freeze can and has happened when I am not interacting with either the sim or the stream deck, so I am not directly triggering the event. The hang ups in sim DO NOT HAPPEN when I fly without using AAO/Stream Deck, so I am as sure as I can be that it has something to do with one or both of them. THINGS I HAVE TRIED: I have made sure Stream Deck is on my primary monitor. (that was a known issue regarding the stream deck itself) I have verified that there are not any firewalls interacting with either Stream deck or AAO in any way I have verified that the WebAPI port 9080 is open and reserved for AAO. I have uninstalled and reinstalled: -AAO (and all scripts from the link) by removing the application and everything related to it in %appdata% Local and Roaming -Stream Deck by doing the same as above, removing all plugins and files related to the program I have attempted to recreate the event but I haven't been able to reliably or predictably figure out the cause. I am not very sure how the scripting interacts with the sim or stream deck, but in my uneducated state, it seems that there might be some hang up in that interaction. But I have no way to know for sure (obviously). I really enjoy using AAO and the stream deck together, but I am getting really frustrated with it and at this point, I would just like to know if there is a solution or if I need to give up and go back to using my mouse to click the cockpit items.