Sign Up for Training |
insightsoftware Company Site
Submit a Request
Become a Jet Insider
Give Feedback

Jet Hub - 503 The Service is Unavailable


When attempting to access Jet Hub, the following message is displayed:


Complete text of error message is:

Service Unavailable

HTTP Error 503.  The service is unavailable.



  1. Open Internet Information Services (IIS) Manager

  2. Select the Application Pools


  3. In the Application Pools frame, click on Jet Hub

    **Note that the Status shows Stopped*

  4. Right-click on it and select Advanced Settings…

  5. Set Enable 32-bit Applications to False

  6. Click the OK button

  7. Right-click on Jet Hub and select Start

    Allow for a few seconds to pass... then try refreshing Jet Hub once again from your browser.

Anyone with whom the access has been granted should be able to browse to the site from within a supported web browser.


With the release of Windows 10 Version 1709 (Fall Creators Update) or Windows Server 2016 Version 1709, after the upgrade, some web applications do not start, and they return the above HTTP 503 error message. (Article ID: 4050891 - Last Review: Oct 17, 2017)

More details can be found in this Microsoft Support article.



To resolve this problem, manually delete the symbolic links that are created by Windows Update.

To do this, follow these steps.

Note Symbolic links can be deleted the same as regular files.

  1. Open a Windows PowerShell window by using the Run as administrator option.
  2. Run the following commands:
    Stop-Service -Force WAS
    Remove-Item -Recurse -Force C:\inetpub\temp\appPools\*
    Start-Service W3SVC
Was this article helpful?
4 out of 4 found this helpful