Identify the Application Pool for a Service Application

1) Start �>Run �> inetmgr

2) Under the Sites click on SharePoint Web Services. This will list down the Services in SharePoint.

3) Click on each GUID �> Change the view from Features View to Content View

4) On finding SearchService.svc -> Right click that web service -> Manage Application -> Advanced Settings.

5) Identify the Application Pool (make a note of this).

6) Now in IIS �> Application Pools �> choose the Application Pool you noted down in previous step   -> Recycle (recycle the application pool).

Internal server error exception: System.NullReferenceException: Object reference not set to an instance of an object

Error Description

Recently I came across this error with SharePoint Search. I was searching in a SharePoint list and got the below error.

Error

Internal server error exception:

Troubleshoot issues with Microsoft SharePoint Foundation.

On checking the ULS logs I found the below entries

01/28/2015 10:59:51.10         w3wp.exe (0x31D8)                0x2030    SharePoint Server Search      Query      fm9a        Unexpected                CoreResultsWebPart::OnInit: Exception initializing: System.NullReferenceException: Object reference not set to an instance of an object.     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.SetPropertiesOnQueryReader()     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.OnInit(EventArgs e)               7001a8bf-b506-4096-b46b-003fbb5ec91b

01/28/2015 10:59:51.10         w3wp.exe (0x31D8)                0x2030    SharePoint Server Search      Query      g1j9         Exception                Internal server error exception: System.NullReferenceException: Object reference not set to an instance of an object.     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.SetPropertiesOnQueryReader()     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.OnInit(EventArgs e) System.NullReferenceException: Object reference not set to an instance of an object.     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.SetPropertiesOnQueryReader()     at Microsoft.Office.Server.Search.WebControls.CoreResultsWebPart.OnInit(EventArgs e)               7001a8bf-b506-4096-b46b-003fbb5ec91b

01/28/2015 10:59:51.10         w3wp.exe (0x31D8)                0x2030    SharePoint Server  Unified Logging Service       c91s        Monitorable                Watson bucket parameters: SharePoint Server 2010, ULSException14, 06175311 "sharepoint server search", 0e001b67 "14.0.7015.0", 17853a8f "microsoft.office.server.search", 0e001bd1 "14.0.7121.0", 531f1826 "tue mar 11 10:05:26 2014", 000032a4 "000032a4", 0000002d "0000002d", 4a6d3421 "nullreferenceexception", 67316a39 "g1j9"    7001a8bf-b506-4096-b46b-003fbb5ec91b

Solution 1

If you go into Central Administration -> System Settings -> Manage Services on Server. Make sure the below services are started.

- SharePoint Server Search

- Search Query and Site Settings Service

Solution 2

Click through all the Search Administration pages in Central Admin.Click through all the Search Administration pages in Central Admin. Now perform the search again. The issue should have disappeared.

Solution 3

Identify the underlying application pool for search (Reference)

Perform an application pool recycle

An exception occurred when trying to issue security token: The HTTP service located at http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc/actas is too busy.

There was an unexpected server reboot for our applications server and our service application features were failing. On checking, I noticed the below error in the Windows Event Viewer

Event ID: 8306

An exception occurred when trying to issue security token: The HTTP service located at http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc/actas is too busy.

On browsing to http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc ,  I got the below error

Fix

Identify the application pool for the Service Applications.

Application Pool-> Check Status -> Start