I had been using vMicro without issue for a long time. I didn't use it for a while and now I'm getting back into Arduino programming. I'm using Visual Studio 2019 16.7.1 and vMicro 19. I download the latest Arduino IDE.

When I load an empty Arduino project into visual studio it loads ok,  but in the status bar the icon for background tasks shows "Updating c/c++ intellisense and browser information" and that never stops running. I left it run overnight and it still had not stopped this morning after about 14 hours.

What this causes is when I try to load a library into my project, or close down Visual Studio it hangs until I use Task Manager and kill it.

This only happens when I'm loading Arduino projects, but that's the only time I use C++, so I'm not sure if this is a Visual Studio issue or vMicro. Regular Winforms apps load and close fine with no issues. I thought I would start here and see if anyone has seen this and maybe has a fix.

I have uninstalled everything C++ from Visual Studio which uninstalled vMicro then re-installed it and same thing. I did not re-install Visual Studio because what a pain, but if I can't find an answer then that's the next thing I'll try.

If anyone has any ideas I would appreciate the help. I'm not sure how to get any logs because the IDE is completely non-responsive until I kill it.

Thanks in advance

Matt

Wow that was fast.

I forgot to mention that I had already done the repair and no luck. The board is an Arduino Mega, and the empty project does build successfully. Adding a library though just hangs everything. Time do do some searching at Microsoft.

Thanks for the immediate response!

Matt

Nothing is checked on the Add Libraries menu. I tried turning off anti-virus but that doesn't help.

After a bit more troubleshooting I have narrowed it down to adding User Installed libraries. 

I created a new empty Arduino project, no problem.

When I added EEPROM from the built-in libraries for example it went through the updating intellisense process quickly and successfully.

Next I added FastLED. It started updating intellisense, got to parsing 348/348, and hung. Different libraries stop at different spots. They are stored on a UNC path, but I ran them from there before no problem.

Not sure what it means, but at least I'm closer.

If you can follow the guide in yellow above we will see your config.

Zipping and providing your user libs folder would also allow us to try to replicate.

Nothing arrived yet. Maybe a file size issue, please check for failed email.

Thanks

The libraries email arrived thanks. They are fine.

I see in your build output you are using unc for the sketchbook folder. Can you try mapping it to a drive letter in windows explorer then setting that as the sketchbook path in IDE locations. 

Also confirm that adding non-user libraries is not an issue? That will prove that the UNC is the issue.

Thanks

Thanks, we will try to setup a test and replicate.

It seems like just loading the project from the UNC path is enough to trigger this. I loaded a previous project using the mapped drive and everything was good. Then out of curiosity I loaded the exact same project from the UNC path, and the problem appeared.