Cannot Install Syncfusion.EJ2.MVC5 because Newtonsoft.Json is already installed

Question

I currently have Newtonsoft.Json installed which multiple other libraries that are dependant upon it like Hangfire.Core and Microsoft.AspNet.Web.Api and many others. I am trying to install Syncfusion.EJ2.MVC5 but am not able to because Newtonsoft.Json is already installed. I cannot uninstall Newtonsoft.Json without uninstalling all the other libraries so its a catch 22.

How can I proceed?

Muthukumar Kannan · Accepted Answer

Hi Anthony, 

Thanks for your patience. 

We are glad to announce that our Essential Studio 2021 Volume 1 SP release v19.1.0.63 has been rolled out successfully and is available for download under the following link. 

https://www.syncfusion.com/forums/165437/essential-studio-2021-volume-1-service-pack-release-v19-1-0-63-is-available-for-download 

And in this release, we have included the fix for “‘Newtonsoft.json’ dependency version mismatch issue with ‘Syncfusion.EJ2.MVC packages’” issue. So kindly update your NuGet (Syncfusion.EJ2.MVC) to our latest version (19.1.0.63) to resolve the reported issue. 

Please find the Nuget package from below 

Nuget: https://www.nuget.org/packages/Syncfusion.EJ2.MVC5/ 

Release notes: https://ej2.syncfusion.com/aspnetmvc/documentation/release-notes/19.1.63/?type=bug-fixes 

We thank you for your support and appreciate your patience in waiting for this release. Please get in touch with us if you would require any further assistance. 

Regards, 
Muthukumar K

Muthukumar Kannan · Answer

Hi Anthony,  

Thanks for contacting Syncfusion support.  

We are validating your reported query for “‘Newtonsoft.json’ dependency version mismatch issue with ‘Syncfusion.EJ2.MVC packages” and we can able to replicate the issue at our end. So, we have logged this as issue and created the feedback at our end. However, it can be included in our upcoming Volume 1 2021 SP1 release it will be scheduled on May 13th, 2021. Until then we appreciate your patience. Please find the feedback below. 

https://www.syncfusion.com/feedback/25082/upgrading-the-newtonsoft-json-dependency-version-in-asp-net-mvc-package 

Please get back to us if you have any concerns. 

Regards, 
Muthukumar K