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Method not found: System.MissingMethodException

Yogesh Vedpathak

I am upgrading .net core web api 2.2 to .net core 3.1 while runtime i am getting error like

'Microsoft.Extensions.DependencyInjection.IServiceCollection Microsoft.Extensions.DependencyInjection.AuthorizationServiceCollectionExtensions.AddAuthorization(Microsoft.Extensions.DependencyInjection.IServiceCollection, System.Action`1)'.

3 Replies

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Amit Gupta5y ago
Restore and update are different, please goto Nuget Package Manager via Tools menu and select your packages and click update, also cross verify that all update has been done plus whenever you update your project always clean and rebuild

Good Luck !!
+1
Yogesh Vedpathak5y ago
Hi Amt I used dotnet restore command to restore Nuget
+1
Amit Gupta5y ago
Have you tried upgrading your nuget packages too? If all done then clean and rebuid your project
+1