Project could not be opened because the Microsoft Visual C# 2010 compiler could not be created. Please re-install Visual Studio

Question

After installing Debugger Canvas and restarting Visual Studio, I get this error for each project when opening a solution:

Project <Name> could not be opened because the Microsoft Visual C# 2010 compiler could not be created. Please re-install Visual Studio.

I tried all of the answers from this question with no luck: Microsoft visual C# 2008 compiler could not be created. Please re-install Visual Studio

So far I have:

Tried the /resetsettings argument
Tried the /ResetSkipPkgs argument
Tried removing the whole key: HKEY_CURRENT_USER\Software\Microsoft\VisualStudio

Any other ideas other than reinstalling VS and/or SP1?

VS Version: 10.0.40219.1 SP1Rel

Thanks!

[Application Can't Load. Visual C# 2015 RC Compiler Could Not Be Created](http://stackoverflow.com/a/36800682) may help — Michael Freidgeim, Aug 05 '16 at 02:05

score 25 · Answer 1 · answered Mar 19 '14 at 07:28

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Open VS command prompt
Run the following command

devenv /resetsettings
Open your Project

answered Mar 19 '14 at 07:28

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I got "Project 'X' could not be opened because the Visual C# 2015 compiler could not be created" in Visual Studio 2015. devenv /resetsettings fixed that issue for VS 2015 too. – Sergey Oct 16 '15 at 04:14
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@Sergey it didn't solve mine, I am still getting "Visual C# 2015 compiler could not be created" while creating a new project. Note: I tried all the mentioned answers!!! – Soumyaansh Jan 12 '16 at 08:40
@Sergey I am facing the same problem with same VS 2015. But it message me to reinstall VS. While I have run to repair it – Ajay Sharma Jan 29 '16 at 10:33

score 11 · Accepted Answer · answered Sep 16 '11 at 15:15

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After trying everything, I fixed this by reapplying the SP1, without needing to reinstall the whole VS. Hope it helps someone else!

answered Sep 16 '11 at 15:15

alf

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How do you reapply it? – Joe Phillips Dec 17 '15 at 20:22
@JoePhilllips just run the SP1 installer again – alf Dec 18 '15 at 17:31
@alf Thanks. I had a similar problem and nothing would work. Had to completely reinstall new version of VS – Joe Phillips Dec 18 '15 at 17:47

score 0 · Answer 3 · answered Mar 10 '15 at 09:12

I had a similar problem, but the error message also included "Query Service for { } failed." I tried opening VS with both the /ResetSkipPkgs and /ResetSettings switches, which didn't work. I finally fixed it by deleting the following registry key.

HKEY_CURRENT_USER\Software\Microsoft\VisualStudio

Visual studio will lose all user preferences the next time you start it.

score 0 · Answer 4 · answered Mar 11 '17 at 16:32

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VS2015 - My issue was in the sln file. Reverting to previous revision resolved the issue.

answered Mar 11 '17 at 16:32

Rob Stanfield

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Project could not be opened because the Microsoft Visual C# 2010 compiler could not be created. Please re-install Visual Studio

4 Answers4