Sharepoint 2010 Application Pool Stops After First Hit

Received a Error 503 after first/initial hit on the site.

Service Unavailable

---

HTTP Error 503. The service is unavailable.

Solutions:

1) In the Control Panel, open Administrative Tools, then Local Security Policy.

2) Beneath Security Settings, open Local Policies and highlight User Rights Assignment.

3) Locate Log on as a batch job. Open the properties and add any users that need this right.

Reference of the article from:

Sharepoint 2010 Application Pool Stops

Service Unavailable – HTTP Error 503