The search request was unable to connect to the Search Service

Recently i came across the issue “The search request was unable to connect to the Search Service”.

After the usual troubleshooting i found solution.There are many solution

1.Go to Start
2.select Run
3.Type in “Services.msc”
4.In the services console check wheather Windows SharePoint Services Search(ONLY IF THAT SERVER IS MANAGING YOUR SEARCH) is running.

1.Goto Computer management
2.Select Services and applications
3.Start indexing service.

Restart “Office SharePoint Server Search(ONLY IF THAT SERVER IS MANAGING YOUR SEARCH) ” and “Windows SharePoint Services Search (ONLY IF THAT SERVER IS MANAGING YOUR SEARCH) ” Windows Services

1.Go to Operations tab in Central Administration
2.Select “Services on Server” from Topology and Services
3.Select your Indexing/application Server from the server menu and make sure “Office SharePoint Server Search” and “Windows SharePoint Services Search” services are started.

1.Go to Central Administration

2.Select Operations Tab

3.Select Services on Server

4.check whether Office Share Point Server Search is started.

Search the Application Pool that is using Microsoft SharePoint Server, change
the permissions from Network Services to an account that having sufficient
privileges to access the SQL Database.

Another possible resolution could be that the user who is configured to run the search has not the required permissions. So check the user permission on the SQL Database. And if your SQL Server is running under Mixed Mode Authentication.

When the Index and Query roles are installed on different Web servers, check whether for ports of index and query servers are opened.