Running setup fails to install dotnetcore.

[abhidotnet]

I uninstalled the existing version of coreCLR on my machine. I have a windows 7 64 bit machine with professional version of Visual Studio 2015.

When I attempted to install vc_redist.x64.exe (Microsoft Visual C++ 2015 Redistributable (x64) - 14.0.23026), I got an error in the logs that says
Condition 'VersionNT64 >= v6.0 OR (VersionNT64 = v5.2 AND ServicePackLevel >= 1)' evaluates to true.
Error 0x80070666: Cannot install a product when a newer version is installed.
When I attempted to install the DotNetCore.1.0.0.RC2-SDK.Preview1-x64.exe, it throws an error stating that "Another version of this product is already installed"

So I am unable to install this.

Environment data

dotnet --info output:

'dotnet' is not recognized as an internal or external command,
operable program or batch file.

[armydee]

Same issue. I have VS 2015 Enterprise installed.

It's incredibly annoying.

[esargent]

Same issue here, but with VS 2015 Pro RC3
I had dotnetcore RC2 installed and running, but the Visual Studio integration was weird so I uninstalled everything related to dotnetcore (any version). Then uninstalled Visual Studio and reinstalled.

With that done, Visual Studio is prompting me to upgrade tools and points me to the SDK installer, but when I try to run, I get the another version of this product is already installed error. Checking the version yields the dotnet : The term 'dotnet' is not recognized as the name of a cmdlet, function, script file, or operable program. message.

I tried running the installer from the command line with the -uninstall option. It reported it was doing that, but it didn't resolve the problem.

Programs and Features doesn't show anything related to dotnetcore being installed.

Installer log is attached.
Microsoft_.NET_Core_1.0.0_RC2_-SDK_Preview_1(x64)_20160615130409.log.txt

Looks like there was a package left behind by the uninstallers? Can I delete that manually?

[esargent]

FIXED: I found there was a known issue with Tooling Preview (not explicitly SDK) after installing Visual Studio 2015 RC3 which has the same symptom: https://msdn.microsoft.com/en-us/vs-knownissues/vs2015-update3-rc

Specifically, you have to Repair the Visual C++ 2015 Redistributable (both x86 and x64) via the "Programs and Feature" Window (a.k.a. Add/Remove Programs)

This allowed me to install the SDK and the tooling preview. I hope it helps others as well.

[abhidotnet]

Yes. Esargent, This has worked for me. I was able to install the "DotNetCore.1.0.0.RC2-VS2015Tools.Preview1.exe" after doing a repair just like you've suggested.

[ekiliqua]

Hi all, first sorry for my English because isn't my native language...

I'm learning with this project and have the same problem. I resolve this searching at Google.

Quote: abhidotnet

Yes. Esargent, This has worked for me. I was able to install the "DotNetCore.1.0.0.RC2-VS2015Tools.Preview1.exe" after doing a repair just like you've suggested.

I found this: https://www.microsoft.com/net/core#windowsvs2015 and work for me. Is the same solution but you have here the URL for download it.

[TheRealPiotrP]

Thanks @ekiliqua. Do also try VS 2017 RC if you get a chance. The tooling has come a long way since Preview 1!