Method not found: '!! 0 [] System.Array.Empty ()'

Question

I have IIS 8.5 version. And my web api project framework is .Net 4.6 . I publish the web api and it is work on local iis express or my computer(windows 8.1) iis. But when I publish the api on windows server r2 2012 iis and when I click browse, I get below error.

Note: server iis version is same as my computer version.

Server Error in '/' Application.

Method not found: '!! 0 [] System.Array.Empty ()'.

Explanation: An unhandled exception occurred while executing the current web request. Please review the stack trace to find out more about the error and where it originates in the code.

Exception Details: System.MissingMethodException: Method not found: '!! 0 [] System.Array.Empty ()'.

user_5232050 · Answer

Check this: https://msdn.microsoft.com/en-us/library/ms366723.aspx?f=255&MSPPError=-2147217396

On the first request the IIS will try to precompile the code files and the webpages. If you are using Array.Empty in (.aspx or a .cs file in the App_Code directory .. etc) and there is no .net 4.6 installed on the server, the exception will be raised.

user_7404680 · Answer

I solved problem as below:

Download and install windows updates.
After , install .net 4.6.2

Method not found: '!! 0 [] System.Array.Empty ()'

2 Answers