diff --git a/internal/core/vagrantfile.go b/internal/core/vagrantfile.go
index 67237cda1..fd786155c 100644
--- a/internal/core/vagrantfile.go
+++ b/internal/core/vagrantfile.go
@@ -525,6 +525,7 @@ func (v *Vagrantfile) TargetConfig(
 						"provider_not_usable",
 						map[string]string{"Provider": provider, "Machine": name},
 						errStatus,
+						true,
 					)
 				}
 			}
diff --git a/plugins/commands/serve/util/exception_transformer.rb b/plugins/commands/serve/util/exception_transformer.rb
index dc12343b7..bf5c61239 100644
--- a/plugins/commands/serve/util/exception_transformer.rb
+++ b/plugins/commands/serve/util/exception_transformer.rb
@@ -58,7 +58,7 @@ module VagrantPlugins
                 if err.is_a? Vagrant::Errors::VagrantError
                   localized_msg_details_any = Google::Protobuf::Any.new
                   localized_msg_details_any.pack(
-                    Google::Rpc::LocalizedMessage.new(locale: "en-US", message: message)
+                    Google::Rpc::LocalizedMessage.new(locale: "en-US", message: message.gsub("\n", " "))
                   )
                   proto = Google::Rpc::Status.new(
                     code: GRPC::Core::StatusCodes::UNKNOWN,