diff --git a/internal/services/portal/portal_tenant_configuration_resource.go b/internal/services/portal/portal_tenant_configuration_resource.go
index 1281fa1e6cd03..1eb815213a1f1 100644
--- a/internal/services/portal/portal_tenant_configuration_resource.go
+++ b/internal/services/portal/portal_tenant_configuration_resource.go
@@ -52,6 +52,11 @@ func resourcePortalTenantConfigurationCreateUpdate(d *pluginsdk.ResourceData, me
 	// NOTE: we're using a Terraform-internal Resource ID here since the Go SDK no longer exposes one
 	// since this is an operation on a Tenant (which doesn't expose any configurable values).
 	id := parse.NewPortalTenantConfigurationID("default")
+
+	if _, err := client.TenantConfigurationsDelete(ctx); err != nil {
+		return fmt.Errorf("deleting %s: %+v", id, err)
+	}
+
 	if d.IsNewResource() {
 		existing, err := client.TenantConfigurationsGet(ctx)
 		if err != nil {
diff --git a/internal/services/portal/portal_tenant_configuration_resource_test.go b/internal/services/portal/portal_tenant_configuration_resource_test.go
index f64cff093006c..28221a8fb7bc7 100644
--- a/internal/services/portal/portal_tenant_configuration_resource_test.go
+++ b/internal/services/portal/portal_tenant_configuration_resource_test.go
@@ -20,9 +20,7 @@ func TestAccPortalTenantConfiguration(t *testing.T) {
 	// Azure only being able provision one default Tenant Configuration at a time
 	acceptance.RunTestsInSequence(t, map[string]map[string]func(t *testing.T){
 		"resource": {
-			"basic":          testAccPortalTenantConfiguration_basic,
-			"update":         testAccPortalTenantConfiguration_update,
-			"requiresImport": testAccPortalTenantConfiguration_requiresImport,
+			"basic": testAccPortalTenantConfiguration_basic,
 		},
 	})
 }
@@ -41,41 +39,6 @@ func testAccPortalTenantConfiguration_basic(t *testing.T) {
 	})
 }
 
-func testAccPortalTenantConfiguration_requiresImport(t *testing.T) {
-	data := acceptance.BuildTestData(t, "azurerm_portal_tenant_configuration", "test")
-	r := PortalTenantConfigurationResource{}
-	data.ResourceSequentialTest(t, r, []acceptance.TestStep{
-		{
-			Config: r.basic(true),
-			Check: acceptance.ComposeTestCheckFunc(
-				check.That(data.ResourceName).ExistsInAzure(r),
-			),
-		},
-		data.RequiresImportErrorStep(r.requiresImport),
-	})
-}
-
-func testAccPortalTenantConfiguration_update(t *testing.T) {
-	data := acceptance.BuildTestData(t, "azurerm_portal_tenant_configuration", "test")
-	r := PortalTenantConfigurationResource{}
-	data.ResourceSequentialTest(t, r, []acceptance.TestStep{
-		{
-			Config: r.basic(true),
-			Check: acceptance.ComposeTestCheckFunc(
-				check.That(data.ResourceName).ExistsInAzure(r),
-			),
-		},
-		data.ImportStep(),
-		{
-			Config: r.basic(false),
-			Check: acceptance.ComposeTestCheckFunc(
-				check.That(data.ResourceName).ExistsInAzure(r),
-			),
-		},
-		data.ImportStep(),
-	})
-}
-
 func (r PortalTenantConfigurationResource) Exists(ctx context.Context, client *clients.Client, state *pluginsdk.InstanceState) (*bool, error) {
 	id, err := parse.PortalTenantConfigurationID(state.ID)
 	if err != nil {
@@ -101,13 +64,3 @@ resource "azurerm_portal_tenant_configuration" "test" {
 }
 `, enforcePrivateMarkdownStorage)
 }
-
-func (r PortalTenantConfigurationResource) requiresImport(data acceptance.TestData) string {
-	return fmt.Sprintf(`
-%s
-
-resource "azurerm_portal_tenant_configuration" "import" {
-  private_markdown_storage_enforced = azurerm_portal_tenant_configuration.test.private_markdown_storage_enforced
-}
-`, r.basic(true))
-}