Dell APEX Cloud Platform for Microsoft Azure: Fail to upgrade a cluster when proxy settings are configured

If you attempt to update a cluster that has proxy settings configured from Microsoft Azure Stack HCI version 10.2311.x.x to 10.2402.x.x, the upgrade fails. The error message in the Dell APEX Cloud Platform extension on Windows Admin Center is:

The cluster update failed. Operation failed. Internal action 'Check update readiness' failed with status 'Failed'.

See the below screenshot for an example.

On one of the cluster nodes, you can check the detailed error over cmdlet:

• Start-MonitoringActionplanInstanceToComplete -actionPlanInstanceID "<Action reference ID>"

The error message shows "Proxy settings (Proxy Server and Bypass List) must be consistent across winhttp and environment variables and nodes."

This is a Microsoft environment checker issue.
By design, the proxy bypass list is different for winhttp and wininet, but the environment check expects them to be the same, which causes the validation failure.
It usually happens when you update the cluster with proxy settings from Microsoft Azure Stack HCI version 10.2311.5.6 to 10.2402.2.12.

Engage the Microsoft support team to resolve the issue.

Microsoft has fixed the issue on 10.2402.4.x and 10.2405.1.x and above releases.