Unable to Install Any Package in Visual Studio 2015
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Unable to Install Any Package in Visual Studio 2015
I've tried every package I could possibly find and none of them will install in my project. I've installed every update listed in the Extensions and Updates list that were available. When I attempt to install SendGrid for example, this is the result (as is the result with all other packages):
Attempting to gather dependencies information for package 'Sendgrid.6.1.0' with respect to project 'UI\MyApplication.MVC', targeting '.NETFramework,Version=v4.5.2' Attempting to resolve dependencies for package 'Sendgrid.6.1.0' with DependencyBehavior 'Lowest' Resolving actions to install package 'Sendgrid.6.1.0' Resolved actions to install package 'Sendgrid.6.1.0' For adding package 'SendGrid.SmtpApi.1.3.1' to project 'MyApplication.MVC' that targets 'net452'. For adding package 'SendGrid.SmtpApi.1.3.1' to project 'MyApplication.MVC' that targets 'net452'. Adding package 'SendGrid.SmtpApi.1.3.1' to folder 'C:\Users\Keith\Source\Workspaces\MyApplication\MyApplication.MVC\packages' Install failed. Rolling back... I can't be the only one on the planet having issue with Visual Studio 2015 and the new and "improved" NuGet Package Manager.
UPDATE:
Well, must be something odd in my solution because I created a new project from the VS2015 template (web) and the packages install just fine. When I find out the issue, I'll post the resolution in the event others run into the same problem.
UPDATE 2:
Ok, it's not our solution. We created a new solution from scratch again (this has wasted a lot of our development time might I add), added a couple of packages (Identity, EF, SendGrid) and after checking the solution in to VSO, another developer performs a fresh creation of the branch and build errors occur. When I go to the NuGet packages for an individual project, it acts as though none of the packages I have added are available. Anyone else experiencing this?
Answer by Tu?n Tr?n for Unable to Install Any Package in Visual Studio 2015
My guess is Nuget Package Manager is messing up with VSO. I create a new project, add packages to it just fine, check in TFS. Then I go home, "Get Latest Version", and Run, and fail because Nuget Package Manager doesn't restore my packages. Solution: on my home machine
- open Nuget Package Manger, uninstall every packaged that have installed
- Open References folder, right click > Delete for all the packages you've installed
- Re-install them via Nuget Package Manager
- Check in
Answer by Alejo03 for Unable to Install Any Package in Visual Studio 2015
I found a solution for this in my case, try to update the NuGet Package Manager.
To do this:
- From VS, go to Tools -> Extensions and Updates
- Open the Updates menu option at the left, then select Visual Studio Gallery.
- If there is an update for Nuget Package Installer, it should show in the list to the right. Click Update
- Restart Visual Studio
This let me install packages without problem again.
Hope this helps!
Answer by mike.bukosky for Unable to Install Any Package in Visual Studio 2015
I was able to resolve this issue by reinstalling Nuget Package Manager via Tools -> Extensions and Updates
Answer by Nikolay Kostov for Unable to Install Any Package in Visual Studio 2015
In my case updating Microsoft.CodeDom.Providers.DotNetCompilerPlatform and Microsoft.Net.Compilers caused the problem.
Deleting bin, obj, and packages folders and restarting Visual Studio 2015 solved the problem for me.
Answer by Lars for Unable to Install Any Package in Visual Studio
Closing and re-opening VS2015 resolved the issue for me
Answer by Bron Davies for Unable to Install Any Package in Visual Studio 2015
Sometimes complicated projects have a hard time getting coordinated on where changes belong. For example, in one case I got this error when a nuget package was referenced by another solution that we had to incorporate into the "main" solution and this caused the IDE to have a fit because there was more than one nuget package manager available. You can resolve a lot of these types of issues by removing and restoring your references and dependencies one by one from scratch in the projects where there are issues/errors.
Answer by andynormancx for Unable to Install Any Package in Visual Studio 2015
I had this problem, which seemed to be caused by something broken in the solution level packages folder. I deleted the contents of the folder and let nuget install all the packages again.
I could then install new packages again.
Answer by statue for Unable to Install Any Package in Visual Studio 2015
t;dr - Delete this:
%AppData%/Nuget/Nuget.config Longer version:
- Go to this path:
C:\Users\{{username}}\AppData\Roaming\ - Delete
Nuget.config - Restart VS for good measure
Answer by MarkMiddlemist for Unable to Install Any Package in Visual Studio 2015
Just to help out anyone who has landed on this page after updating VS2015 to update 2 and trying to manage packages on a website, receiving the "NuGet configuration file is invalid" error, this is a known and acknowledged issue:
I got mine working again by installing package manager 3.4.4 (beta) from http://dist.nuget.org/index.html
They do also state update 3 for Visual Studio will also contain a fix
Answer by Tom Stickel for Unable to Install Any Package in Visual Studio 2015
In general closing and re-open VS 2015 fixed most problems I have ran across. Once I did need to run a repair on one of my computers.
However I was about to do this Closing and re-opening VS2015 resolved the issue for me I figured that I would instead right click on the project and Unload Project then right click and Reload project THEN Manage Nuget worked!
Answer by raterus for Unable to Install Any Package in Visual Studio 2015
In my case, This problem was caused by a mismatch in my Target framework setting under each project. When I created a new project, VS 2015 defaulted to 4.5.2, however all my nuget packages were built for 4.6.
For some reason, VS 2015 was not showing me these errors. I didn't see them until I created a new empty project and tried to add my nuget project there. This behavior may have been aggravated because I had renamed the project a few times during the initial setup.
I solved the problem by
- changing the Target Framework on my projects to 4.6
- closed VS 2015
- deleted "packages", "obj" and "bin" folders
- re-open the solution and try to add the nuget package again.
Answer by controlbox for Unable to Install Any Package in Visual Studio 2015
I am using Visual Studio 2015 Update 3 and I managed to reproduce this error (despite Update 3 allegedly containing a fix).
As suggested above, a reliable fix is to do the following... 1) Exit Visual Studio, 2) Delete the packages folder, 3) Restart VS.
But... if you don't want to immediately exit VS for some reason, I was still able to add/remove packages from all projects by choosing the 'Manage NuGet Packages for Solution' option, rather than the individual Project with the issue.
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