New web application button was grayed out within Central Administration in SharePoint

 I tried to create a new web application via Central Administration > application management > New Web application. But unfortunately, the New button was disabled as shown below:

 

 

Cause:

 

This issue usually occurs because the current user didn’t have a sufficient privilege to create a new web application.

 

Solution:

 

Try to run Central Administration as administrator as shown below.

 

 

If the issue still persists, you should ensure that

 

The user should be a member in farm administrator group and local administrator group on the server.

The central administration URL should be added within local intranet zone by following the mentioned steps below:

Open IE > Navigate to Central Admin > Go to tools menu > Internet Options

 

 

Security Tab > Local Intranet > Click on sites button > Check automatically detect intranet network > Click Advanced button > Click Add button > Close.

 

 

Try to restart IE again; the new button should be now enabled.

 

 

Thank you very much

          Fahadullah Karimi

         SharePoint Specialist

http://how-to-solution-sharepoint-issues.blogspot.com/

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