Okay so after a lot of trial and error I was able to resolve the issue for now.

Here’s the steps-
Right click on all Vienna *.exes in program films and x32 folders and set to Admin mode.

This seems to have fixed the issue at least for now.

Hi all. I have a windows 10 x64 machine with Pro Tools 11 Pro HD, all SSD drives and 32gb of ram, AMD 3700x 8 core processor. 

So I have this issue that Vienna instruments crashes pro tools, it's the ONLY plugin that does this. 

Everything else (I have a lot of them) all work fine.

Disabling admin mode fixes it but I can't do that, I need it on because it breaks other things to turn it offs. 

I am using the latest version of VEP 6 and VI and also updated e-licenser to the latest version. Pro tools is also as far updated PT11.

I don't what caused this, it used to work fine but windows forces me to update along with the other programs so I need a fix asap. 

On starting Pro Tools it shows an error and asks to "retry" indefinitely, it causes the app to hang or crash. 

Application 'Vienna Symphonic Library' has caused the following error: 

Process with the ID NOT found.

Options: 

 - Click <Ok> to abort.

Clicking OK doesn't work. It is stuck in a loop forever until I restart the computer. 

I have this problem too! I have two users on my computer. 

One has VEP x64 server start instance, the other does not. Both have corrupted start menu icons that do nothing.

I can search for the correct instance on the one user, probably due to an older install. But this user is corrupted.

I need a workaround. Reinstall still has broken icons on start menu.