Installing extension problem

[Martin_Kelemen85]

Hi,

I have clean installation of Windows Server 2022 (include all updates) and Azure DevOps Server 2022 Patch 3.

I am trying to install some extensions from Marketplace (I have tried many different extensions), but I am getting the same validation error:

Extension validation error

Could not load file or assembly 'System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Has anybody encountered this problem ? 

Thank you

[#2]

@Martin_Kelemen85 

It's quite common, please refer this for insights:

asp.net mvc - Exception – Could not load file or assembly 'System.Web.Mvc, Version=4.0.0.1…' - Stack...

[#3]

@Kidd_Ip 

Hi, thank you for reply.

I red more articles like this one, but Azure DevOps is not my project. I can not change references and recompile it. 

M.