Windows 7: New files not automatically displayed in explorer (.NET 4.5 required) about vscode-filewatcher-windows HOT 12 CLOSED

From @gregvanl on April 7, 2016 17:44

Also repros on 0.10.14-insiders

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From @gregvanl on April 7, 2016 19:20

Doesn't repro on Windows 8.1 and 10

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From @gregvanl on April 7, 2016 20:1

Simpler repro:
Just create a new file with notepad, add text and save.
Doesn't show up in the explorer until you either restart or run refresh.

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From @gregvanl on April 8, 2016 0:7

I've reproduced this on two different Windows 7 VMs. I can grant access to anyone who wants to take a look.

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From @gregvanl on April 8, 2016 0:45

I'm using http://xlab DevDiv Private Cloud VMs for my testing. It's very easy to create Windows 7 machines for testing. I assume the Zurich team has access to this service.

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From @gregvanl on April 8, 2016 5:43

This is very consistent (100%) on the xlab VMs but I haven't been able to repro this on other Windows 7 machines.

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Can you try to run VS Code in verbose mode?

• find the Code.exe in the programs folder
• execute code.exe --verbose

You should then get the file events logged to the dev console.

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From @gregvanl on April 8, 2016 15:34

This issue is that Electron requires .NET 4.5 since it uses System.Threading.Tasks.Task.Delay(Int32) which came with .NET 4.5. https://msdn.microsoft.com/en-us/library/hh194873(v=vs.110).aspx
Windows 7 on the VMs only has .NET 4.
Here's the exception stack from the debug console:
[FileWatcher] process error: System.MissingMethodException: Method not found: 'System.Threading.Tasks.Task System.Threading.Tasks.Task.Delay(Int32)'.
at FileWatcher.EventProcessor.ProcessEvent(FileEvent fileEvent)
at VSCode.FileSystem.Program.<>c__DisplayClass8.

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From @gregvanl on April 8, 2016 15:36

Do we want to detect that .NET 4.5 is missing and alert the user?
I will add this requirement to the docs in setup.md.
I think this explains some of the verbatim we see where various walkthroughs like the CSS topic don't work at all for users.

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From @gregvanl on April 8, 2016 15:53

I think we should alert the user when VS Code sees a MissingMethodException. Windows 7 still has the highest market share of the Windows OSs and the experience when we eat this exception is poor since the File Watcher isn't working.

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From @gregvanl on April 8, 2016 16:42

Note: .NET 4.5 is only an optional update for Windows 7

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Now showing a message to the user.

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