Hub randomly shows error message "The proxy was unable to load balance any of the engine services"

[Sonja_Bauernfeind]

Hub randomly shows error message "The proxy was unable to load balance any of the engine services" when users are accessing the HUB.


Environment: 

Qlik Sense Enterprise on Windows , all versions

Causes:

It is possible that an antivirus service is locking Qlik Sense system files with active live scanning.

Resolution:

Add the following exceptions to the antivirus (Default paths, that may change if they have been customized), the change will apply to all nodes:

For more details see article "Antivirus exceptions for Qlik Sense- McAfee, Symantec & Other Anti-Virus exclusions absolutely requi..."

1. C:\ProgramData\Qlik
2. C:\Program Files\Qlik
3. C:\Program Files\Common Files\Qlik
4. Also the Shared folder location
5. C:\Users\YourId\AppData\Local\Temp
6. Restart the operating system after completing the changes.