Internal server error exception when users perform a search in SharePoint

Internal server error exception when users perform a search in SharePoint       
                                        

 Issue: once we configure Search and started all the Related services, when we check the search in web site, There could be many reasons that search is not working properly even when we configured everything good. In this article I am providing all the Relevant and related solutions to check. Every solution that need to take into consideration and apply to resolve the issues. One of the mentioned solution that definitely work and resolve the issue

Cause: This issue occurs when the Search service application proxy is associated with a web application but is not associated with any Search service applications in the farm.

Solution 1: To do this, follow these steps:

1.    Open Central Administration.

2.    Click Manage web applications.

3.    Select the affected web application.

4.    On the ribbon, click Service Connections.

5.    Under Configure Service Application Associations, select the valid Search service application proxy check box.

Solution 2 : Ensure to check the below

1.     Restart the SharePoint timer services/ IIS/ SharePoint Search service / Restart Server

2.     Enable "Search Server Web Parts" feature on the Site Collection level.

3.     Run the "Search and Process" Timer Job

4.     ensure that the "SharePoint Server Search" and "Search Query and Site Settings Service" services are running

5.     ensuring that the application pool is assigned correctly

6.     Remove and reinstall the search application Finally.

Please Comment if you need Any Help.Your Feed back is always Welcome.I Am Happy to Help !!!!!