I have Visual Studio Professional 2019, and I'm working on debugging a project that has issues with its NuGet packages. The NuGet Package Manager button is present when right clicking the solution.
But when I click the button, nothing happens. Nothing opens. Absolutely nothing, no error code, no messagebox, no warning in the debugger. I've tried uninstalling and reinstalling my NuGet extensions, nothing changed. I uninstalled and reinstalled visual studio and made sure to enable the package manager, nothing. I restarted my computer and Visual Studio, nothing.
The thing is, I tried opening another project (this time one of my own), and the package manager works fine, which leads me to believe the guy who made this program disabled the package manager entirely, but somehow kept the button there? I don't know exactly what the hell he did, but right now I'm not able to actually work into getting the packages I need to even launch the program. I can't look at ANY part of it either until the packages are added, because Visual Studio won't display anything.
Projects and solutions can't change the Visual Studio menu options themselves. This issue might occur for you if you are missing a .sln file for your project or if it has become corrupted (you don't actually need a .sln file to open a project in Visual Studio). If you notice, Visual Studio's NuGet Package Manager option in the menu says
Manage NuGet Packages for Solution
(emphasis mine). If you don't have the .sln file and associated properties file, then Visual Studio can't do anything when you click on that menu... there is no 'Solution' (.sln file) for it to manage packages for, in essence
Check the original working repository of the code where the project was created and look for a .sln file and a .vssscc file, and copy those over to your new working repository and open the project via that .sln file, and NuGet Package Manager should open successfully now.
If you can't find them or if the working repository doesn't exist anymore, then you'll need to create a new solution in Visual Studio and import/copy all the project files into the new solution. I don't know of a way to 'rebuild' or 'recreate' a solution file and solution properties file for a project that doesn't have them anymore.
For reference, I have had this issue when running VS on a new computer and opening projects I created, so it is not necessarily some form of 'sabotage'.
Though perhaps not the case for the original question asker, one cause of the "NuGet Package Manager" just won't open issue is a syntax error in the project's packages.config file.
In my case, a merge conflict I didn't notice added merge text (the "<<<<<.." type stuff) to the config file. That lead to a silent read error, which I didn't notice until I opened the actual NuGet Package Manager Console.
This issue occurred for me when I opened a project directly. When I instead opened the project by opening a saved solution (*.sln file) that contained the project, it went away.
In my situation, the problem was duplicated targets in the Sdk Style projects.
I imported an AssemblyInfo.Pack.Common file that defined a PreBuild and PostPack target into a Sdk Style project. But these were also present in the project file itself. The solution was to remove that targets from the project file.
In my case, I was using Visual Studio 2022 and my project was targeting .NET Framework 4.6.2.
I resolved it by removing duplicate package reference in my packages.config file which happened out of merge.
From,
<package id="Microsoft.IdentityModel.Tokens" version="6.25.0" targetFramework="net462" />
<package id="Microsoft.IdentityModel.Tokens" version="6.25.1" targetFramework="net462" />
To,
<package id="Microsoft.IdentityModel.Logging" version="6.25.0" targetFramework="net462" />
This now opens the Nuget Package Manager for my project.
Related
I tried to build a project from downloaded source code using VS2017 community edition. Got following error
This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is ..\..\packages\Xamarin.Forms.3.2.0.637442-pre1\build\netstandard2.0\Xamarin.Forms.props.
not sure whats the issue. I tried
Delete packages folder and restore packages.
Delete obj and bin folder. Tried to clean rebuild.
First, restart Visual Studio, cleaning and building the solution most times is not enough.
Try unloading the project in Visual Studio and edit the csproj file.
Search for that props file reference in the file. Sometimes it gets duplicatedthe current version and one outdated version as well. Remove the old one and reload the project.
Check in your Forms, Android/iOS if the csproj is referencing the same Xamarin.Forms version,and are no strange lines/characters.
<PackageReference Include="Xamarin.Forms" Version="x.x.x.xxxxx" />
In the last resort, try to downgrade the XamarinForms version and check if it helps.
It's very possible that I'm missing something simple because I can't find others on the internet experiencing the same thing.
I'm a team that's new to the use of TFS and Visual Studio Online and we're encountering this problem:
(Using Visual Studio 2015 & 2013)
I used NuGet to add Microsoft.AspNet.WebApi.Cors to my newly created WebAPI project (ditto all other NuGet packages)
Did my work and checked in a building solution in to VSO
Co-worker did a Get Latest
His newly-retrieved project won't build and, when we expand the References, the assemblies are marked with a yellow warning icon, indicating that they're missing
We've tried (from the context of the failing project):
Update-Package
Update-Package -reinstall
Manually uninstalling and reinstalling the package in the NuGet UI
Manually adding the entire contents of the Packages directory in to TFS and doing a get latest on that directory as well
Wiping the solution out from his local file system and pulling it down clean
Copying the contents of my {Solution Directory}\Packages to a USB drive, walking it to my co-worker's computer, and copying it to his machine
Only item #6 worked but I'm CERTAIN that this cannot be the right answer.
I guarantee that this is worthy of a dope-slap but what might I be missing?
Thank you to jessehouwing for reminding me that this topic is still out here. He's exactly right on. We removed the Packages folder from source control and that resolved the problem completely.
I am trying to use NuGet Package Restore with VS2010 + Visual Sourcesafe. It is working partially for me.
Where this is coming from: NuGet not getting missing packages
My Solution2 has asp.net website[Project1 in above image] that has another nuget package installed. Now another developer opens the Solution2 via VS2010, the automatic restore works for Library projects in Solution1. It gets all missing packages for Library projects that is referenced in this Solution2 and I see them in Solution1/packages folder.
But for Website it says external dlls i.e. pacakages missing. The issue I think is because website doesn't have a .csproj file and so it doesn't know things needs to be restored.(http://nuget.codeplex.com/workitem/1663)
Making it work partially:
Added packages/repositories.config to website solution (What is a solution folder in visual studio)
Another developer goes to VSS and get that packages folder manually. Now when he builds the solution, the Package Manager Console prompts for restore i.e. has "Restore" button. On clicking it will bring the AjaxControlToolkit.
Questions:
- Is the above approach the only and best available for Websites?
When the developer clicks "Restore" button it brings packages for Library as well to Solution1/packages along with packages for nuget. Any reason why would it do that?
Any ideas on above issues?
Per you link, nuget doesn't support websites. If you really need to use Nuget, and let's face it, everyone does, then in my opinion the best approach is to switch your website over to a web application, at which point visual studio will create a csproj file for you, detailing the nuget packages that are contained in the project.
HTH
For adding Solution level "packages" folder with repositories.config to VS Solution Explorer, I created a Solution folder and added repositories.config.
That created packages folder in the SourceSafe when I checked-in the solution.
I also found someone pointing the same thing here.
Update: I think the newer nuget is restoring the packages. But one other trick for nuget to add the dll to the bin folder it to check-in the .refresh files for AjaxControlToolkit and its dependent packages.
I have a Visual Studio project which I have committed to VisualSVN (via the VisualSVN => Commit menu in Visual Studio). I have added a number of libraries to this project via NuGet.
My colleague has downloaded the project I have uploaded to SVN (via VisualSVN => Get solution from Subversion...) and has found that these libraries are missing, and he is having to re-download them.
A few questions:
Is this by design? Or have I not committed my Solution properly? Or has my colleague not download the solution to his machine properly?
If this is by design, what is the correct way to re-add references to a solution downloaded from an SVN server? I am worried that I may have added a reference and worked with it, and that it may have been updated since so whenever my colleague re-adds the same reference via NuGet he will get a more up to date version that will be different, and this will break my program. Is this a valid concern?
Yes, this is by design. The whole concept of using Nuget is that you will not have to keep libraries in your version control system.
You need to Right Click on your solution in Visual Studio and select Enable NuGet Package Restore.
This will configure the solution to restore the NuGet packages (if any missing, or in case of none) whenever you'll do a build. Also, all the libraries that you've added for a particular project will have an entry in the packages.config created in the project's source drectory; for eg:
<packages>
<package id="jQuery" version="1.8.3" />
</packages>
This way NuGet makes sure everybody gets the same version.
Just enable "Nuget package restore" in your solution and packages will be automatically downloaded during the build:
http://docs.nuget.org/docs/workflows/using-nuget-without-committing-packages
So I downloaded Twitterizer from http://www.twitterizer.net/downloads/
I try to open it in Visual Studio and get all these nuget errors:
The imported project "C:\Twitterizer\.nuget\nuget.targets" was not found.
Confirm that the path in the <Import> declaration is correct, and that the file
exists on disk.
What is going on. How do I deal with this?
Install Nuget.
Right click on the solution and select "Enable NuGet
Package Restore". In Visual Studio 2013 and later, select "Restore NuGet Packages" instead.
Click Ok on the warning.
Close and re-open the solution.
Should now be hunky-dory.
An alternative is to edit the .csproj file with a texteditor and remove or comment out the segment.
This error normally happens when you are trying to open a .csproj directly, not through the solution file, and the .csproj imports the Nuget targets like this:
<Import Project="$(SolutionDir)\.nuget\NuGet.targets" />
In order to solve it, you can either open the .sln and not the .csproj directly...or remove the import line above.
Notice that the mentioned error will only happen when you are using solution wise package restore, which isn't even recommended anymore.
Just ran into the same problem, but in my case the issue was a space in the folder name:
Nuget was telling me it couldn't find "C:\git\My Path" but I was able to navigate to "C:\git\My%20Path". Removing the space in the foldername "fixed" the issue.
I know I'm late to the party but here is a really good tutorial on how to fix this issue. I used this to fix my project.
Close down Visual Studio If the solution you are trying to migrate is
open in Visual Studio, then changes may be lost. Visual Studio may
overwrite/ignore your changes in some cases and the NuGet extension
will also try to re-enable Package Restore when it sees some projects
in the solution are missing it.
If you are using TFS Remove the NuGet.exe and NuGet.targets files from
the solution's .nuget folder. Make sure the files themselves are also
removed from the solution workspace. Retain the NuGet.Config file to
continue to bypass adding packages to source control. Edit each
project file (e.g., .csproj, .vbproj) in the solution and remove any
references to the NuGet.targets file. Open the project file(s) in the
editor of your choice and remove the following settings:
true ... ...
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download
them. For more information, see
http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is
{0}.
If you are not
using TFS Remove the .nuget folder from your solution. Make sure the
folder itself is also removed from the solution workspace. Edit each
project file (e.g., .csproj, .vbproj) in the solution and remove any
references to the NuGet.targets file. Open the project file(s) in the
editor of your choice and remove the following settings:
true ... ...
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download
them. For more information, see
http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is
{0}.
Migration Script
Many users have requested a migration tool to disable the
MSBuild-based package restore and convert to Automatic Package
Restore. The NuGet team has decided not to provide a supported tool
for this because of the high probability of edge cases that would be
unhandled. However, Owen Johnson has authored a PowerShell script that
can work in many cases. It's available on GitHub and can be used at
your own risk. In other words, be sure to commit to source control
before running it, just in case it doesn't work in your scenario.
Nuget.target Fix
When i get the nuget.targets not found error i use the package manager to uninstall-package one of the packages in the project and then reinstall it using install-package. It seems like it regenerates the nugets.target file then.
Easiest solution when you get this error in order to restore the missing NuGet.targets in Visual Studio Solution Explorer is to:
Right click on the solution file
From the context menu click "Enable Nuget Package Restore..." option
this will download the missing files in the ".nuget" folder :)
The above assumes you already have Nuget installed - if not follow the accepted answer above!
UPDATE:
Please note for Visual Studio versions beyond 2013 the option is called "Restore NuGet Packages"