Service unavailable error
Symptoms: When trying to start the Sentinel web page, you get the error: "Service Unavailable”.
Cause: This may occur if the server running Microsoft Internet Information Services (IIS) 6.0 is also a domain controller. The problem occurs because the Application pool is using the NT Authority\Network Service account, and the account does not have permission to access the required folders.
Resolution: Manually set permissions on the folders for the IIS_WPG group, and then set permissions on the folders for the NT Authority\Network Service account, as follows:
- Start Windows Explorer, and then open the folder %systemroot%\Help\iisHelp.
- In the right pane, right click the Common folder, and click Sharing and Security.
- Click the Security tab, click Add, type IIS_WPG, and click OK.
- With IIS_WPG selected, select the following checkboxes under the Allow column, and click OK:
- Read and Execute
- List Folder Contents
- Read
- Repeat the previous step with NETWORK SERVICE instead of IIS_WPG.
- Open the folder %systemroot%\system32\inetsrv. In the right pane, right click the ASP Compiled Templates folder, and click Sharing and Security.
- Click the Security tab, click the IIS_WPG group, and select the Full Control checkbox under the Allow column. Click OK.
- Repeat the previous step with NETWORK SERVICE instead of IIS_WPG.
- Open the folder %systemroot%. In the right pane, right click the IIS Temporary Compressed folder, and click Sharing and Security.
- Click the Security tab, click the IIS_WPG group, and select the Full Control checkbox under the Allow column. Click OK.
- Repeat the previous step with NETWORK SERVICE instead of IIS_WPG.
- Restart the IIS Admin service from the Services snap-in or from the Computer Management snap-in.