Description

Associating a RouteTable with a subnet works fine. PowerShell example=
$RT = Get-AzRouteTable -name -ResourceGroupName
Set-AzVirtualNetworkSubnetConfig -VirtualNetwork -Name -AddressPrefix 10.0.0.0/8 -RouteTable $RT | Set-AzVirtualNetwork

However, dissociating a RouteTable from a subnet does not seem to work. PowerShell example:
$VNET = Get-AzVirtualNetwork -Name -ResourceGroupName
Set-AzVirtualNetworkSubnetConfig -VirtualNetwork $VNET -Name -AddressPrefix 10.10.10.0/24 -RouteTable $null | Set-AzVirtualNetwork

What happens is that the -RouteTable $null does not seem to do anything. I've tried just "null" as well, with no luck. When executing with $null the of the JSON output VNET and SUBNET config is visible in the PowerShell session, but no attributes are changed.

Steps to reproduce

Import-Module Az
Connect-AzAccount

$VNET = Get-AzVirtualNetwork -Name -ResourceGroupName
Set-AzVirtualNetworkSubnetConfig -VirtualNetwork $VNET -Name -AddressPrefix 10.10.10.0/24 -RouteTable $null | Set-AzVirtualNetwork

Environment data

Name Value

PSVersion 5.1.18362.145
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.18362.145
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

Module versions

ModuleType Version Name ExportedCommands

Script 1.6.0 Az.Accounts {Disable-AzDataCollection, Disable-AzContextAutosave, Enable-AzDataCollection, Enable-AzContextAutosave...}
Script 1.5.3 Az.Accounts {Disable-AzDataCollection, Disable-AzContextAutosave, Enable-AzDataCollection, Enable-AzContextAutosave...}
Script 1.1.0 Az.Accounts {Disable-AzDataCollection, Disable-AzContextAutosave, Enable-AzDataCollection, Enable-AzContextAutosave...}
Script 1.0.0 Az.Advisor {Get-AzAdvisorRecommendation, Enable-AzAdvisorRecommendation, Disable-AzAdvisorRecommendation, Get-AzAdvisorConfiguration...}
Script 1.0.1 Az.Aks {Get-AzAks, New-AzAks, Remove-AzAks, Import-AzAksCredential...}
Script 1.0.0 Az.Aks {Get-AzAks, New-AzAks, Remove-AzAks, Import-AzAksCredential...}
Script 1.1.0 Az.AnalysisServices {Resume-AzAnalysisServicesServer, Suspend-AzAnalysisServicesServer, Get-AzAnalysisServicesServer, Remove-AzAnalysisServicesServer...}
Script 1.0.0 Az.AnalysisServices {Resume-AzAnalysisServicesServer, Suspend-AzAnalysisServicesServer, Get-AzAnalysisServicesServer, Remove-AzAnalysisServicesServer...}
Script 1.2.0 Az.ApiManagement {Add-AzApiManagementApiToProduct, Add-AzApiManagementProductToGroup, Add-AzApiManagementRegion, Add-AzApiManagementUserToGroup...}
Script 1.1.0 Az.ApiManagement {Add-AzApiManagementApiToProduct, Add-AzApiManagementProductToGroup, Add-AzApiManagementRegion, Add-AzApiManagementUserToGroup...}
Script 1.0.0 Az.ApiManagement {Add-AzApiManagementRegion, Get-AzApiManagementSsoToken, New-AzApiManagementCustomHostnameConfiguration, New-AzApiManagementSystemCertificate...}
Script 1.0.0 Az.ApplicationInsights {Get-AzApplicationInsights, New-AzApplicationInsights, Remove-AzApplicationInsights, Set-AzApplicationInsightsPricingPlan...}
Script 1.3.0 Az.Automation {Get-AzAutomationHybridWorkerGroup, Remove-AzAutomationHybridWorkerGroup, Get-AzAutomationJobOutputRecord, Import-AzAutomationDscNodeConfiguration...}
Script 1.2.2 Az.Automation {Get-AzAutomationHybridWorkerGroup, Remove-AzAutomationHybridWorkerGroup, Get-AzAutomationJobOutputRecord, Import-AzAutomationDscNodeConfiguration...}
Script 1.0.0 Az.Automation {Get-AzAutomationHybridWorkerGroup, Remove-AzAutomationHybridWorkerGroup, Get-AzAutomationJobOutputRecord, Import-AzAutomationDscNodeConfiguration...}
Script 1.1.0 Az.Batch {Remove-AzBatchAccount, Get-AzBatchAccount, Get-AzBatchAccountKey, New-AzBatchAccount...}
Script 1.0.0 Az.Batch {Remove-AzBatchAccount, Get-AzBatchAccount, Get-AzBatchAccountKeys, New-AzBatchAccount...}
Script 1.0.0 Az.Billing {Get-AzBillingInvoice, Get-AzBillingPeriod, Get-AzEnrollmentAccount, Get-AzConsumptionBudget...}
Script 1.3.0 Az.Cdn {Get-AzCdnProfile, Get-AzCdnProfileSsoUrl, New-AzCdnProfile, Remove-AzCdnProfile...}
Script 1.0.0 Az.Cdn {Get-AzCdnProfile, Get-AzCdnProfileSsoUrl, New-AzCdnProfile, Remove-AzCdnProfile...}
Script 1.1.1 Az.CognitiveServices {Get-AzCognitiveServicesAccount, Get-AzCognitiveServicesAccountKey, Get-AzCognitiveServicesAccountSku, Get-AzCognitiveServicesAccountType...}
Script 1.0.0 Az.CognitiveServices {Get-AzCognitiveServicesAccount, Get-AzCognitiveServicesAccountKey, Get-AzCognitiveServicesAccountSkus, Get-AzCognitiveServicesAccountType...}
Script 2.4.0 Az.Compute {Remove-AzAvailabilitySet, Get-AzAvailabilitySet, New-AzAvailabilitySet, Update-AzAvailabilitySet...}
Script 2.3.0 Az.Compute {Remove-AzAvailabilitySet, Get-AzAvailabilitySet, New-AzAvailabilitySet, Update-AzAvailabilitySet...}
Script 1.1.0 Az.Compute {Remove-AzAvailabilitySet, Get-AzAvailabilitySet, New-AzAvailabilitySet, Update-AzAvailabilitySet...}
Script 1.0.1 Az.ContainerInstance {New-AzContainerGroup, Get-AzContainerGroup, Remove-AzContainerGroup, Get-AzContainerInstanceLog}
Script 1.0.0 Az.ContainerInstance {New-AzContainerGroup, Get-AzContainerGroup, Remove-AzContainerGroup, Get-AzContainerInstanceLog}
Script 1.0.1 Az.ContainerRegistry {New-AzContainerRegistry, Get-AzContainerRegistry, Update-AzContainerRegistry, Remove-AzContainerRegistry...}
Script 1.0.0 Az.ContainerRegistry {New-AzContainerRegistry, Get-AzContainerRegistry, Update-AzContainerRegistry, Remove-AzContainerRegistry...}
Script 1.1.2 Az.DataFactory {Set-AzDataFactoryV2, Update-AzDataFactoryV2, Get-AzDataFactoryV2, Remove-AzDataFactoryV2...}
Script 1.1.1 Az.DataFactory {Set-AzDataFactoryV2, Update-AzDataFactoryV2, Get-AzDataFactoryV2, Remove-AzDataFactoryV2...}
Script 1.0.0 Az.DataFactory {Set-AzDataFactoryV2, Update-AzDataFactoryV2, Get-AzDataFactoryV2, Remove-AzDataFactoryV2...}
Script 1.0.0 Az.DataLakeAnalytics {Get-AzDataLakeAnalyticsDataSource, New-AzDataLakeAnalyticsCatalogCredential, Remove-AzDataLakeAnalyticsCatalogCredential, Set-AzDataLakeAnalyticsCatalogCredential...
Script 1.2.1 Az.DataLakeStore {Get-AzDataLakeStoreTrustedIdProvider, Remove-AzDataLakeStoreTrustedIdProvider, Remove-AzDataLakeStoreFirewallRule, Set-AzDataLakeStoreTrustedIdProvider...}
Script 1.0.1 Az.DataLakeStore {Get-AzDataLakeStoreTrustedIdProvider, Remove-AzDataLakeStoreTrustedIdProvider, Remove-AzDataLakeStoreFirewallRule, Set-AzDataLakeStoreTrustedIdProvider...}
Script 1.0.0 Az.DeploymentManager {Get-AzDeploymentManagerArtifactSource, New-AzDeploymentManagerArtifactSource, Set-AzDeploymentManagerArtifactSource, Remove-AzDeploymentManagerArtifactSource...}
Script 1.0.0 Az.DevTestLabs {Get-AzDtlAllowedVMSizesPolicy, Get-AzDtlAutoShutdownPolicy, Get-AzDtlAutoStartPolicy, Get-AzDtlVMsPerLabPolicy...}
Script 1.1.1 Az.Dns {Get-AzDnsRecordSet, New-AzDnsRecordConfig, Remove-AzDnsRecordSet, Set-AzDnsRecordSet...}
Script 1.0.0 Az.Dns {Get-AzDnsRecordSet, New-AzDnsRecordConfig, Remove-AzDnsRecordSet, Set-AzDnsRecordSet...}
Script 1.2.1 Az.EventGrid {New-AzEventGridTopic, Get-AzEventGridTopic, Set-AzEventGridTopic, New-AzEventGridTopicKey...}
Script 1.2.0 Az.EventGrid {New-AzEventGridTopic, Get-AzEventGridTopic, Set-AzEventGridTopic, New-AzEventGridTopicKey...}
Script 1.1.0 Az.EventGrid {New-AzEventGridTopic, Get-AzEventGridTopic, Set-AzEventGridTopic, New-AzEventGridTopicKey...}
Script 1.2.0 Az.EventHub {New-AzEventHubNamespace, Get-AzEventHubNamespace, Set-AzEventHubNamespace, Remove-AzEventHubNamespace...}
Script 1.0.0 Az.EventHub {New-AzEventHubNamespace, Get-AzEventHubNamespace, Set-AzEventHubNamespace, Remove-AzEventHubNamespace...}
Script 1.1.0 Az.FrontDoor {New-AzFrontDoor, Get-AzFrontDoor, Set-AzFrontDoor, Remove-AzFrontDoor...}
Script 2.0.0 Az.HDInsight {Get-AzHDInsightJob, New-AzHDInsightSqoopJobDefinition, Wait-AzHDInsightJob, New-AzHDInsightStreamingMapReduceJobDefinition...}
Script 1.0.0 Az.HDInsight {Get-AzHDInsightJob, New-AzHDInsightSqoopJobDefinition, Wait-AzHDInsightJob, New-AzHDInsightStreamingMapReduceJobDefinition...}
Script 1.2.0 Az.IotHub {Add-AzIotHubKey, Get-AzIotHubEventHubConsumerGroup, Get-AzIotHubConnectionString, Get-AzIotHubJob...}
Script 1.1.0 Az.IotHub {Add-AzIotHubKey, Get-AzIotHubEventHubConsumerGroup, Get-AzIotHubConnectionString, Get-AzIotHubJob...}
Script 1.0.1 Az.IotHub {Add-AzIotHubKey, Get-AzIotHubEventHubConsumerGroup, Get-AzIotHubConnectionString, Get-AzIotHubJob...}
Script 1.2.0 Az.KeyVault {Add-AzKeyVaultCertificate, Update-AzKeyVaultCertificate, Stop-AzKeyVaultCertificateOperation, Get-AzKeyVaultCertificateOperation...}
Script 1.0.0 Az.KeyVault {Add-AzKeyVaultCertificate, Update-AzKeyVaultCertificate, Stop-AzKeyVaultCertificateOperation, Get-AzKeyVaultCertificateOperation...}
Script 1.2.1 Az.LogicApp {Get-AzIntegrationAccountAgreement, Get-AzIntegrationAccountAssembly, Get-AzIntegrationAccountBatchConfiguration, Get-AzIntegrationAccountCallbackUrl...}
Script 1.1.0 Az.LogicApp {Get-AzIntegrationAccountAgreement, Get-AzIntegrationAccountCallbackUrl, Get-AzIntegrationAccountCertificate, Get-AzIntegrationAccount...}
Script 1.1.0 Az.MachineLearning {Move-AzMlCommitmentAssociation, Get-AzMlCommitmentAssociation, Get-AzMlCommitmentPlanUsageHistory, Remove-AzMlCommitmentPlan...}
Script 1.0.0 Az.MachineLearning {Move-AzMlCommitmentAssociation, Get-AzMlCommitmentAssociation, Get-AzMlCommitmentPlanUsageHistory, Remove-AzMlCommitmentPlan...}
Script 1.0.0 Az.MarketplaceOrdering {Get-AzMarketplaceTerms, Set-AzMarketplaceTerms}
Script 1.1.0 Az.Media {Sync-AzMediaServiceStorageKey, Set-AzMediaServiceKey, Get-AzMediaServiceKey, Get-AzMediaServiceNameAvailability...}
Script 1.0.0 Az.Media {Sync-AzMediaServiceStorageKeys, Set-AzMediaServiceKey, Get-AzMediaServiceKeys, Get-AzMediaServiceNameAvailability...}
Script 1.2.1 Az.Monitor {Get-AzMetricDefinition, Get-AzMetric, Remove-AzLogProfile, Get-AzLogProfile...}
Script 1.0.0 Az.Monitor {Get-AzMetricDefinition, Get-AzMetric, Remove-AzLogProfile, Get-AzLogProfile...}
Script 1.11.0 Az.Network {Add-AzApplicationGatewayAuthenticationCertificate, Get-AzApplicationGatewayAuthenticationCertificate, New-AzApplicationGatewayAuthenticationCertificate, Remove-Az...
Script 1.10.0 Az.Network {Add-AzApplicationGatewayAuthenticationCertificate, Get-AzApplicationGatewayAuthenticationCertificate, New-AzApplicationGatewayAuthenticationCertificate, Remove-Az...
Script 1.0.0 Az.Network {Add-AzApplicationGatewayAuthenticationCertificate, Get-AzApplicationGatewayAuthenticationCertificate, New-AzApplicationGatewayAuthenticationCertificate, Remove-Az...
Script 1.1.0 Az.NotificationHubs {Get-AzNotificationHub, Get-AzNotificationHubAuthorizationRule, Get-AzNotificationHubListKey, Get-AzNotificationHubPNSCredential...}
Script 1.0.0 Az.NotificationHubs {Get-AzNotificationHub, Get-AzNotificationHubAuthorizationRules, Get-AzNotificationHubListKeys, Get-AzNotificationHubPNSCredentials...}
Script 1.3.1 Az.OperationalInsights {New-AzOperationalInsightsAzureActivityLogDataSource, New-AzOperationalInsightsCustomLogDataSource, Disable-AzOperationalInsightsLinuxCustomLogCollection, Disable-...
Script 1.3.0 Az.OperationalInsights {New-AzOperationalInsightsAzureActivityLogDataSource, New-AzOperationalInsightsCustomLogDataSource, Disable-AzOperationalInsightsLinuxCustomLogCollection, Disable-...
Script 1.0.0 Az.OperationalInsights {New-AzOperationalInsightsAzureActivityLogDataSource, New-AzOperationalInsightsCustomLogDataSource, Disable-AzOperationalInsightsLinuxCustomLogCollection, Disable-...
Script 1.1.2 Az.PolicyInsights {Get-AzPolicyEvent, Get-AzPolicyState, Get-AzPolicyStateSummary, Get-AzPolicyRemediation...}
Script 1.1.1 Az.PolicyInsights {Get-AzPolicyEvent, Get-AzPolicyState, Get-AzPolicyStateSummary, Get-AzPolicyRemediation...}
Script 1.0.0 Az.PolicyInsights {Get-AzPolicyEvent, Get-AzPolicyState, Get-AzPolicyStateSummary, Get-AzPolicyRemediation...}
Script 1.1.0 Az.PowerBIEmbedded {Remove-AzPowerBIWorkspaceCollection, Get-AzPowerBIWorkspaceCollection, Get-AzPowerBIWorkspaceCollectionAccessKey, Get-AzPowerBIWorkspace...}
Script 1.0.0 Az.PowerBIEmbedded {Remove-AzPowerBIWorkspaceCollection, Get-AzPowerBIWorkspaceCollection, Get-AzPowerBIWorkspaceCollectionAccessKeys, Get-AzPowerBIWorkspace...}
Script 1.4.2 Az.RecoveryServices {Get-AzRecoveryServicesBackupProperty, Get-AzRecoveryServicesVault, Get-AzRecoveryServicesVaultSettingsFile, New-AzRecoveryServicesVault...}
Script 1.4.1 Az.RecoveryServices {Get-AzRecoveryServicesBackupProperty, Get-AzRecoveryServicesVault, Get-AzRecoveryServicesVaultSettingsFile, New-AzRecoveryServicesVault...}
Script 1.0.0 Az.RecoveryServices {Get-AzRecoveryServicesBackupProperty, Get-AzRecoveryServicesVault, Get-AzRecoveryServicesVaultSettingsFile, New-AzRecoveryServicesVault...}
Script 1.1.0 Az.RedisCache {Remove-AzRedisCachePatchSchedule, New-AzRedisCacheScheduleEntry, Get-AzRedisCachePatchSchedule, New-AzRedisCachePatchSchedule...}
Script 1.0.0 Az.RedisCache {Remove-AzRedisCachePatchSchedule, New-AzRedisCacheScheduleEntry, Get-AzRedisCachePatchSchedule, New-AzRedisCachePatchSchedule...}
Script 1.0.1 Az.Relay {New-AzRelayNamespace, Get-AzRelayNamespace, Set-AzRelayNamespace, Remove-AzRelayNamespace...}
Script 1.0.0 Az.Relay {New-AzRelayNamespace, Get-AzRelayNamespace, Set-AzRelayNamespace, Remove-AzRelayNamespace...}
Script 1.6.0 Az.Resources {Get-AzProviderOperation, Remove-AzRoleAssignment, Get-AzRoleAssignment, New-AzRoleAssignment...}
Script 1.5.0 Az.Resources {Get-AzProviderOperation, Remove-AzRoleAssignment, Get-AzRoleAssignment, New-AzRoleAssignment...}
Script 1.1.0 Az.Resources {Get-AzProviderOperation, Remove-AzRoleAssignment, Get-AzRoleAssignment, New-AzRoleAssignment...}
Script 1.2.1 Az.ServiceBus {New-AzServiceBusNamespace, Get-AzServiceBusNamespace, Set-AzServiceBusNamespace, Remove-AzServiceBusNamespace...}
Script 1.2.0 Az.ServiceBus {New-AzServiceBusNamespace, Get-AzServiceBusNamespace, Set-AzServiceBusNamespace, Remove-AzServiceBusNamespace...}
Script 1.0.0 Az.ServiceBus {New-AzServiceBusNamespace, Get-AzServiceBusNamespace, Set-AzServiceBusNamespace, Remove-AzServiceBusNamespace...}
Script 1.1.1 Az.ServiceFabric {Add-AzServiceFabricApplicationCertificate, Add-AzServiceFabricClientCertificate, Add-AzServiceFabricClusterCertificate, Add-AzServiceFabricNode...}
Script 1.0.0 Az.ServiceFabric {Add-AzServiceFabricApplicationCertificate, Add-AzServiceFabricClientCertificate, Add-AzServiceFabricClusterCertificate, Add-AzServiceFabricNode...}
Script 1.0.2 Az.SignalR {New-AzSignalR, Get-AzSignalR, Get-AzSignalRKey, New-AzSignalRKey...}
Script 1.0.1 Az.SignalR {New-AzSignalR, Get-AzSignalR, Get-AzSignalRKey, New-AzSignalRKey...}
Script 1.13.0 Az.Sql {Get-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlDatabaseTransparentDataEncryptionActivity, Set-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlDatabaseUpgra...
Script 1.12.0 Az.Sql {Get-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlDatabaseTransparentDataEncryptionActivity, Set-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlDatabaseUpgra...
Script 1.0.1 Az.Sql {Get-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlDatabaseTransparentDataEncryptionActivity, Set-AzSqlDatabaseTransparentDataEncryption, Get-AzSqlDatabaseUpgra...
Script 1.5.0 Az.Storage {Get-AzStorageAccount, Get-AzStorageAccountKey, New-AzStorageAccount, New-AzStorageAccountKey...}
Script 1.4.0 Az.Storage {Get-AzStorageAccount, Get-AzStorageAccountKey, New-AzStorageAccount, New-AzStorageAccountKey...}
Script 1.0.1 Az.Storage {Get-AzStorageAccount, Get-AzStorageAccountKey, New-AzStorageAccount, New-AzStorageAccountKey...}
Script 1.1.1 Az.StorageSync {Invoke-AzStorageSyncCompatibilityCheck, New-AzStorageSyncService, Get-AzStorageSyncService, Remove-AzStorageSyncService...}
Script 1.0.0 Az.StreamAnalytics {Get-AzStreamAnalyticsFunction, Get-AzStreamAnalyticsDefaultFunctionDefinition, New-AzStreamAnalyticsFunction, Remove-AzStreamAnalyticsFunction...}
Script 1.0.1 Az.TrafficManager {Add-AzTrafficManagerCustomHeaderToEndpoint, Remove-AzTrafficManagerCustomHeaderFromEndpoint, Add-AzTrafficManagerCustomHeaderToProfile, Remove-AzTrafficManagerCus...
Script 1.0.0 Az.TrafficManager {Add-AzTrafficManagerCustomHeaderToEndpoint, Remove-AzTrafficManagerCustomHeaderFromEndpoint, Add-AzTrafficManagerCustomHeaderToProfile, Remove-AzTrafficManagerCus...
Script 1.3.0 Az.Websites {Get-AzAppServicePlan, Set-AzAppServicePlan, New-AzAppServicePlan, Remove-AzAppServicePlan...}
Script 1.0.1 Az.Websites {Get-AzAppServicePlan, Set-AzAppServicePlan, New-AzAppServicePlan, Remove-AzAppServicePlan...}
Script 1.0.1 Microsoft.PowerShell.Operation.V... {Get-OperationValidation, Invoke-OperationValidation}
Binary 1.0.0.1 PackageManagement {Find-Package, Get-Package, Get-PackageProvider, Get-PackageSource...}
Script 3.4.0 Pester {Describe, Context, It, Should...}
Script 1.0.0.1 PowerShellGet {Install-Module, Find-Module, Save-Module, Update-Module...}
Script 2.0.0 PSReadline {Get-PSReadLineKeyHandler, Set-PSReadLineKeyHandler, Remove-PSReadLineKeyHandler, Get-PSReadLineOption...}

Debug output

Wasn't able to grab at the time.

Error output

No error visible.