HTTP failure response for <API Call>: 0 Unknown Error
HTTP failure response for <API Call>: 0 Unknown Error
HTTP failure response for <API Call>: 0 Unknown Error
VMware Cloud Director 10.4.x
This issue is a browser specific issue which can occur when the Client Browser has issues sending and receiving API calls to/from Cloud Director.
Factors known to contribute to this would be
There is a known issue in Cloud Director 10.4.x which leverages the 0.0.3 version of the NgHyperPlugin.
To verify the version of the NgHyperPlugin you are running, you can navigate to the Provider UI > More > Customize Portal.
Note: The steps below are assuming the NgHyperPlugin has a version of 0.0.3 or lower.
Rollback
If you are using the 0.0.4 version of the NgHyperPlugin and still observing issues, you are most likely encountering environmental factors which can lead to the observation of the 'Unknown Error'.
Client machine has sufficient memory resources.
Network Connectivity Issues