Merge pull request #188998 from lucashuet93/functionappsettings

add WEBSITE_SKIP_CONTENTSHARE_VALIDATION setting

Author: PRMerger3

articles/azure-functions/functions-app-settings.md

@@ -360,6 +360,16 @@ Only used when deploying to a Premium plan or to a Consumption plan running on W
 
 When using an Azure Resource Manager template to create a function app during deployment, don't include WEBSITE_CONTENTSHARE in the template. This slot setting is generated during deployment. To learn more, see [Automate resource deployment for your function app](functions-infrastructure-as-code.md?tabs=windows#create-a-function-app).
 
+## WEBSITE\_SKIP\_CONTENTSHARE\_VALIDATION
+
+The WEBSITE_CONTENTAZUREFILECONNECTIONSTRING and WEBSITE_CONTENTSHARE settings have additional validation checks to ensure that the app can be properly started. Creation of application settings will fail if the Function App cannot properly call out to the downstream Storage Account or Key Vault due to networking constraints or other limiting factors. When WEBSITE_SKIP_CONTENTSHARE_VALIDATION is set to `1`, the validation check is skipped; otherwise the value defaults to `0` and the validation will take place. 
+
+|Key|Sample value|
+|---|------------|
+|WEBSITE_SKIP_CONTENTSHARE_VALIDATION|`1`|
+
+If validation is skipped and either the connection string or content share are not valid, the app will be unable to start properly and will only serve HTTP 500 errors.
+
 ## WEBSITE\_DNS\_SERVER
 
 Sets the DNS server used by an app when resolving IP addresses. This setting is often required when using certain networking functionality, such as [Azure DNS private zones](functions-networking-options.md#azure-dns-private-zones) and [private endpoints](functions-networking-options.md#restrict-your-storage-account-to-a-virtual-network).