Since upgrading to Parallels Desktop 12 I've had some troubles with using Visual Studio. Specifically while running a website project in IIS Express it is unable to detect changes to files as I make them. This worked absolutely fine in previous versions of Parallels Desktop. The fix is to make changes to a file multiple times (and save it each time), or stop and restart IIS Express. The project is stored on the \\mac\Home file share. The same issue happens regardless of whether I open the project via \\mac\Home or Z:\. I know that C# / .Net uses file system watchers to detect changes to files, and I wonder if these watchers have reached a limit and can't continue watching files for changes. I remember with a previous version of Parallels Desktop there was a similar issue for a short while where Visual Studio while loading a big solution would trigger a limit and take the whole \\mac\Home share offline. Can anyone shed any light on the issue?