Qlik Sense Analytics: Response status code does not indicate success: 401 (Unauthorized) on distribution service reloads

[Andrea_Bertazzo]

App distribution automatic reloads fail randomly with this error message in the logs (C:\ProgramData\Qlik\Sense\Log\AppDistributionService\Trace😞

Response status code does not indicate success: 401 (Unauthorized).

Some reloads may work correctly, but the error is frequent. The same reloads complete successfully if run manually.

Resolution

Ensure that the time in your Qlik Sense on Windows servers matches the time in Qlik Cloud. This must be verified on every node.

If you are using NTP, please check that it is correctly configured and that the server clock is in sync.

Cause

A common cause for this issue is clock inaccuracy between the Qlik Sense on Windows server and Qlik Cloud. A time difference of even a few seconds can cause token validation to fail intermittently. 

This blocks the communication, and the reload fails.

Environment

• Qlik Sense Cloud
• Qlik Sense Enterprise on Windows (on-premise)