Winusb and visa device issue

I have a system I am working on that communicates with some custom hardware via USB. I used the NI driver wizard to create some visa drives, and perform USB RAW writes and reads, and everything was working great.  Unfortunately, I just found out that there is a whole other application written in C++ by someone else that also has to communicate with the same hardware on the same system. Their application uses WinUSB to communicate with the device, so currently the only way I know of to switch between the two applications is to uninstall the VISA drivers, and install the WinUSB drivers, or vice-versa, depending on which application one wants to use.  This obviously isn't going to work long-term.
I'm not sure how to fix this so that we can use both application on the machine without having to constantly change the drivers back and forth. I thought about trying to call WinUSB.dll using LabVIEW, but I'm afraid that might get a little complication. I figured I can't be the first one to run into a problem like this before, so before I start down the WinUSB road, I thought I would check to see if anyone has any better ideas. I'm afraid trying to get at the source, or in anyway changing, the C++ application is not an option.
Thoughts? Ideas? Is calling WinUSB in LabVIEW my best bet?

 
Thoughts? Ideas? Is calling WinUSB in LabVIEW my best bet?
Most likely. Unless you have access to the source code of your other application and can change it to communicate to your device using VISA Raw. NI-VISA has a C API so it is technically possible.
Technically it is not so much WinUSB which is the likely problem but probably something in the application installation which registers WinUSB as the driver handler for your USB device resource. Except for filter drivers, which are chained into the driver chain by Window and for which Windows has a configurablle maximum limit of active filter drivers in the system, Windows only allows one driver to register for a specific device resource. So it would be technically enough to just change that registration entry to point to the currently desired driver.
However this registration API (SetupDI API and its friends) is quite cumbersome and the whole process is rather brittle as it easily can break with every new driver update. Also it would never allow to run both application in parallel, even if you make sure that they do not communicate to the device at the same time.
So calling WinUSB in LabVIEW is probably your safest bet. It won't be trivial, the WinUSB API is somewhat involved but it is definitely doable. The most difficult part is the implementation of your device protocol anyhow which you seem to have tackled already for the VISA raw mode, so I do not see real road blocks ahead, just some botherings about correct Call Library Node configurations

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    Issue #3 I had a JetPack that was recently stolen from my car. I stopped in to ask what to do about it (it is no longer under contract either) They suspended the service and recomended I wait until I upgraded my other phones and then get a new Jet Pack. I just received noticed that they were going to continue billing me for it this week, even though it has been out of contract for several months??????
    I recently went to Best Buy to take advantage of their Black Friday deals and was told that based on the status of my account I was ineligible for any upgrades. We called Verizon from the Best Buy and they told me that I needed to address my account status (I just made the scheduled payment on the 23rd of Nov) either with Financial Services or go to a Corporate Store. I went to the store and was told there was nothing that could be done at that level, I would need to talk to financial services (which was closed)
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    Personal information removed as required by Verizon Wireless Terms of Service
    Message was edited by: Admin Moderator

    Complain to the Attorney General about what? There is nothing in your story worth any such complaint. They will tell you the same.
    First you have payment difficulty so credit and the Edge program are not available to you. You have to be credit worthy to get any upgrade, unless you can pay full price for all those new devices.
    Can you?
    You are trying to get new contract plans, but since you are having paying on time and in full issues you will not get extended credit from any carrier.
    What I would do is go and port out to Boost or Virgin Mobile where you pay a reduced cost for each device and get unlimited everything for $40 to $50 a month, it is pre pay so if you don't pay you get cut off.
    Verizon although with the best coverage is also the highest priced.
    Good Luck

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