Error "HTTP Error 503 The service is unavailable" when launching the Manager console (4259243)

1. Open Internet Information Services (IIS) Manager
2. Navigate to and highlight Default Web Site
3. Under Actions | Browse Web Site | click “Browse *:80 (http)”
4. It should show the default IIS screen load.  If not, then there is an issue with your Default Web Site that requires further investigation.
5. If the IIS screen does load for the Default Web Site then proceed to the next steps.
6. Next, try the same test for the “DesktopAuthorityConsole” under the Default Web Site.
7. Navigate to and highlight “DesktopAuthorityConsole”
8. Under Actions | Browse Web Site | click “Browse *:80 (http)”
9. If the HTTP Error 503 displays here, test the settings to see what is causing the error.
10. Under Actions click Basic Settings, and then click Test Settings.

You may receive an error similar to:

NOTE:  If your environment is running McAfee Anti-Virus check the event log for IIS Error 2280 relating to HipIISEngineStub.dll.

To update the Application Pool Identity:

1. In the Internet Information Services (IIS) Manager, Navigate to and highlight Application Pools.
2. On the right select DaAppPool.
3. Under Actions | Edit Application Pool | Click on Advanced settings…
4. Under Process Model select Identity.
5. Click the browse button (…) next to the account name.
6. Click Set…
7. Set the new/updated credentials (Domain\Username).
8. Press OK.
9. Press OK again.
10. Select DaAppPool.
11. Press the Start button under Action | Application Pool Tasks.
12. Exit the Internet Information Services (IIS) Manager.
13. Launch Desktop Authority Manager.

IIS Error 2280 follow the KB from Mcafee.