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Question

I have problem with autocompletion in VS 2017 Community.

Previously I had VS 2017 Enterprise from school, but key expired. So I moved to community.

Before,

Answer 1

Follow these to fix that error. This applies to VS 2017:

Fix 1:

1.Install Nuget PackageManager from here.

2.Restart Visual Studio.

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If the problem is still there, continue below

Fix 2:

1.Download and start/run the Visual Studio Installer again.

2.While the Visual Studio Installer is still running, go to the "Individual Components" tab

3.Tick the "NuGet package manager" check-box that is under "Code tools" option.

4.Click Install to install it.

Screenshot of where this is located:

That should fix the error you see in this question. Restart Visual Studio and test the auto-completion function. If it's not working, see the answers from this question as that is a whole different issue.