I have while back set a Sharepoint 2007, played a little on it and put it in the corner.
I started it recently, and the Central Admin started giving me the error ‘Service Unavailable HTTP Error 503. The service is unavailable’ and I was not able to access either of them.
- Open up IIS Manager and click on Application Pools.
- Locate your App Pool account and right-click on it and select ‘Advanced Settings’.
- Click on the right of the Identity box to change it (A window will pop up).
- Click on Set and simply retype your App Pool Identity in there with the new password.
Once done, simply restart the IIS. with the command in Windows Dos command line:
‘iireset’ + enter