Null values shown in JSON view function configuration

[dennisbruenig]

In the Azure Portal of a function app the JSON View shows null values for most configuration settings, specifically minTLSversion whereas in the configuration of the Azure Portal it is correctly set.

The function has TLS 1.3 set but a Policy which checks this version does not seem to pick it up correctly as it flags the function not using TLS 1.2 / 1.3 as minimum version. This only affects a function app slot.

Investigative information

Please provide the following:

• Timestamp:
• Function App version:
• Function App name:
• Function name(s) (as appropriate):
• Invocation ID:
• Region:

I cannot provide resource IDs publicly due to confidentiality.

Invocation ID: 462622cc-2ecb-4af2-aac5-035f016e8c60
Timestamp: 2025-09-29T14:10:05.2737897Z
Region: GermanyWestCentral

Repro steps

1. Go to function app, click json view, check mintlsversion having null value
2. Go to function app settings, check TLS Version there having an actual value.

Expected behavior

Having the actual value also shown in the JSON view.

Actual behavior

Provide a description of the actual behavior observed.

Known workarounds

Not known.