How to Hide The Yellow Warning Output in PowerShell

Suppressing warnings in a PowerShell script

In some cases, when you run a PowerShell cmdlet or execute a PowerShell script. You got the yellow warning and the script or command run normally.

You want to suppressing or hiding the yellow warning to make your script look clean.

$subnet = New-AzVirtualNetworkSubnetConfig -Name 'default' -AddressPrefix "172.16.1.0/24"

WARNING: Upcoming breaking changes in the cmdlet 'New-AzVirtualNetworkSubnetConfig' :
Update Property Name
Cmdlet invocation changes :
    Old Way : -ResourceId
    New Way : -NatGatewayId
Update Property Name
Cmdlet invocation changes :
    Old Way : -InputObject
    New Way : -NatGateway
Note : Go to https://aka.ms/azps-changewarnings for steps to suppress this breaking change warning, and other information on breaking changes in Azure PowerShell.

To achieve that goal, let's add -WarningAction SilentlyContinue parameter into your command in the script.

$subnet = New-AzVirtualNetworkSubnetConfig `
-Name 'default' `
-AddressPrefix "172.16.1.0/24" `
-WarningAction silentlyContinue

If you get the waring when working with the Azure PowerShell module. There’s a native option to disable it.

Get-AzConfig

Key                          Value AppliesTo   Scope
---                          ----- ---------   -----
DefaultSubscriptionForLogin        Az        Default
DisplayBreakingChangeWarning True  Az        Default
DisplaySurveyMessage         True  Az        Default
EnableDataCollection         True  Az        Default

To disable the breaking change warning, you can run the below command:

 Update-AzConfig -DisplayBreakingChangeWarning $false

Key                          Value AppliesTo       Scope
---                          ----- ---------       -----
DefaultSubscriptionForLogin        Az            Default
DisplayBreakingChangeWarning False Az        CurrentUser
DisplaySurveyMessage         True  Az            Default
EnableDataCollection         True  Az            Default