Aspnetcore: Problems installing Dot Net Core 1.0.0 VS 2015 Tools Preview 2

[Xipooo]

Each time I try to install the DotNetCore.1.0.0-VS2015Tools.Preview2.exe package I get an error saying the following:

_Setup Failed One or more issues caused the setup to fail. Please fix the issues and then retry setup. For more information see the log file. Setup has detected that Visual Studio 2015 Update 3 may not be completely installed. Please repair Visual Studio 2015 Update 3, then install this product again._

When I look into the log file, I find the following line which seems to be causing the error during install:

_Condition 'WixBundleInstalled OR NOT(((VS2015CommunityUpdateVersion <> VS2015UpdateVersion) AND (VS2015CommunityExists) AND (VS2015UpdateVersionExists)) OR ((VS2015ProfessionalUpdateVersion <> VS2015UpdateVersion) AND (VS2015ProfessionalExists) AND (VS2015UpdateVersionExists)) OR ((VS2015EnterpriseUpdateVersion <> VS2015UpdateVersion) AND (VS2015EnterpriseExists) AND (VS2015UpdateVersionExists)) OR ((VS2015WebExpressUpdateVersion <> VS2015UpdateVersion) AND (VS2015WebExpressExists) AND (VS2015UpdateVersionExists))) OR (SKIP_VSU_CHECK=1) OR (WixBundleAction=2)' evaluates to false._

A simple repair of Update 3 has not resolved the issue, so I was attempting to resort to an uninstall/reinstall of the update. When going through Control Panel > Programs and Features > View Installed updates to uninstall the update, it jumps right to the "Setup Completed" screen saying that all of the components have been uninstalled without any progress screen. Then when I attempt to run the Update 3 installer it says the Update is already installed.

I then tried using Revo Uninstaller but the same thing happens after cleaning out folders and registry items.

I even tried doing an /uninstall /force on the package but to no avail. It seems something is remaining stuck somewhere that keeps the update registered. Any suggestions?

[sbobkin]

You can try manually passing the SKIP_VSU_CHECK to get around that. I had to do it on one of our dev workstations. You can see a bit more info about it here: https://github.com/aspnet/Tooling#release-notes-and-known-issues -- although that's in reference to an older release.

[ps2goat]

Passing SKIP_VSU_CHECK=1 worked for me, at least in bypassing the 'setup failed' message. I assume the installer will complete successfully, otherwise I'll be back!

Update - this worked perfectly for me.

[bspitzer]

Passing SKIP_VSU_CHECK=1 worked for me as well.

[barriestewart]

My error was slightly different in that it would say _"This product requires Visual Studio 2015 Update 3 or later. Please install Visual Studio Update 3 or later, then install this product again."._ SKIP_VSU_CHECK=1 also fixed this error.

[DovydasNavickas]

Same happened to me after trying to reinstall the tooling.
First installation worked properly, but when tooling was uninstalled and I tried to install it again, I got the same error about repairing VS Update 3.
SKIP_VSU_CHECK=1 helped :+1:

[RahulBansalIndia]

Step 1. Open Command Prompt
Step 2. Goto the folder path in command prompt where DorNetCore exe is located
for example cd D:\Softwares
Step 3. Run following line in command prompt
DotNetCore.1.0.0-VS2015Tools.Preview2.exe SKIP_VSU_CHECK=1
Step 4. You should be able to install DotNetCore now.

Ref: https://docs.microsoft.com/en-us/dotnet/articles/core/windows-prerequisites#issues

[Lazdinger]

girl/dude... thank you so much for that!

[Samved-Thakkar]

It worked for me.
Step 1: open command prompt
Step 2; go to the folder where the installer file is located (for me it was in my downloads folder)
E:\downloads**
Step 3: copy paste the installer filename with the skip param like so;
**DotNetCore.1.0.0-VS2015Tools.Preview2.exe SKIP_VSU_CHECK=1

This should allow you to download it without any issue.

[Xipooo]

Thank you everyone, the SKIP_VSU_CHECK=1 worked for me as well.

[dandamudi]

greatfull thanks to everyone, SKIP_VSU_CHECK=1 resolved my issue

[willaw79]

This is working for me as well. Thank you very much!

[ps2goat]

@Xipooo - should this issue remain open so they can fix the prerequisites check? We shouldn't be forced to skip the check; it should do the proper check for update 3.

[fractionalJoe]

Thanks, the SKIP_VSU_CHECK=1 worked for me as well. @Xipooo IMO I agree with ps2goat this issue is not resolved, this is a work around. The issue should remain open until the prerequisite check works properly, otherwise why not remove the prerequisite check.

[jazzdelightsme]

+1: issue should not be resolved--there needs to be an actual fix.

[arktronic]

The latest release, named DotNetCore.1.0.0-VS2015Tools.Preview2.0.1, appears to have fixed the issue.

[balexandre]

@arktronic

nop, I got the same issue as reported, but bypassing the validation with SKIP_VSU_CHECK=1 still works :)

[arktronic]

Odd, I haven't experienced this issue with the new version. If it's still happening, then I agree that the issue should be reopened.

[LeeDumond]

Definitely still happening with Preview2.02 as well.

[federicorinaldi]

+1 still happening with Preview2.0.2

[markanthonyoconnor]

I ran that command from cmd and it opened the install but still failed

[vitalbsk]

@LeeChenelerJS thanks
SOLUTIONS:
Issue 1: Not thinking VS 2015 Update was properly installed
I think that something in the update 3 installer was blocked from properly installing because my laptop s security software randomly chooses to lock files in its process... so the "SKIP_VSU_CHECK=1" solution solved that.

Issue 2: Failed to install Microsoft NuGet during Core Tooling installer
The issue here was basically the same. I couldn't manually uninstall Nuget Package manager from within VS because a process was holding onto it. To combat this I had to manually delete its folder from "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions" then rerun the installer.