Error Install-Package : Conflict occurred. ‘jQuery 1.5.1’ referenced but requested ‘jQuery 1.6.4’. ‘jQuery.vsdoc 1.5.1, jQuery.Validation 1.8. 0, jQuery.UI.Combined 1.8.11’ depend on ‘jQuery 1.5.1’

I was trying to install SignalR using NuGet package manager :-

install-package signalr

and get the following error :-

Install-Package : Conflict occurred. ‘jQuery 1.5.1’ referenced but requested ‘jQuery 1.6.4’. ‘jQuery.vsdoc 1.5.1, jQuery.Validation 1.8.
0, jQuery.UI.Combined 1.8.11′ depend on ‘jQuery 1.5.1’.
At line:1 char:16
+ install-package <<<<  signalr
    + CategoryInfo          : NotSpecified: (:) [Install-Package], InvalidOperationException
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand

So, It looked like jQuery 1.5.1 was referenced in my app. So, I looked that up and It was found in the package.config.

All I had to do is to remove all the jQuery references (highlighed above) and retry installing SignalR again and It got installed successfully this time.

PM> install-package signalr
‘SignalR 0.3.5’ already installed.
Successfully added ‘Microsoft.Web.Infrastructure 1.0.0.0’ to UsingSignalRWithMVC.
Successfully added ‘SignalR.Server 0.3.5’ to UsingSignalRWithMVC.
Successfully added ‘jQuery 1.6.4’ to UsingSignalRWithMVC.
Successfully added ‘SignalR.Js 0.3.5’ to UsingSignalRWithMVC.
Successfully added ‘SignalR 0.3.5’ to UsingSignalRWithMVC.