Microsoft Dynamics CRM Not working

Check This Common Causes

Check the CRM Asynchronous services

This should be your first thing to check because if the ASYNC services have stopped then CRM will stop working.

To see if the Async services are running.

1. Navigate to Start, select Administrative Tools, then click Services.

You should find there are four CRM Async services and you can see if they are started

The Async processing service is usually the cause of CRM not working.

The problem displayed on this page was caused 

If you have restarted the Asyncs and CRM is still not working

Check IIS is up and running

Go to the Start menu type IIS

It will bring up Internet Information Services (IIS) Manager

IIS is the webserver which hosts the Microsoft Dynamics CRM website.  Some times you can find this may be stopped (very very rarely but its something to check, so we can rule it out)

CRM Application pools are running

CRM web app will have an application pool to run the web app, you need to double check its started and running.  The app pool will usually be set to a service account, the main reason you use a service account is because you don’t need to reset the password every 60 days.  Sometimes this setting won’t have been set and the app pool password will change and until someone goes in and puts/resets the password the CRM App pool will stop working.  When the CRM app pool stops working, CRM stops working.

The CRMAppPool is below:

Check the CRM Website is up or not

If you click on the CRM website called Microsoft Dynamics CRM then the details of the web app will appear on the right, you need to check the start is greyed out (which means it is selected)

World Wide Web Publishing Service

There is also a service which controls if IIS is up and running and this is called the World Wide Web Publishing Service (named in the 1990’s I should imagine, not many times you see the words of WWW).  This can be turned off to stop IIS springing back to life after the server has been rebooted.


 SQL Server
I often think of CRM as a web application to show the contents of the CRM SQL database.  If the SQL CRM instance is down, SQL server is off or can’t be contacted then CRM will stop working.
If CRM isn’t working you need to check the SQL server (usually on a different server) is up and running and the CRM instances are running.



 Windows Event Viewer
There are some common things to check if CRM isn’t working but you will also need to check for some pointers for other errors.  The place I usually start is by checking the Event Viewer log on the CRM server.
Go to the CRM Server
Start Menu – type in Event Viewer

or

Control Panel –> Administrative Tools –> Event Viewer

Windows Logs –> Application

Look at the errors and warnings to see if there is anything which might point you in the direction of the potential error.  It’s unlikely you will actually get an error, usually I find it’s a warning and the warning will point you in the direction of the cause of CRM not working.