diff --git a/packages/fx-core/resource/package.nls.json b/packages/fx-core/resource/package.nls.json
index b099cccc70..73ceddf743 100644
--- a/packages/fx-core/resource/package.nls.json
+++ b/packages/fx-core/resource/package.nls.json
@@ -727,27 +727,26 @@
   "error.teamsApp.validate.apiFailed": "Teams app package validation failed due to  %s",
   "error.teamsApp.validate.apiFailed.display": "Teams app pacakge validation failed. Check [Output panel](command:fx-extension.showOutputChannel) for details.",
   "error.teamsApp.validate.details": "File path: %s, title: %s",
-  "error.teamsApp.AppIdNotExistError": "Teams app with ID %s does not exist in Teams Developer Portal.",
+  "error.teamsApp.AppIdNotExistError": "Teams app with ID %s doesn't exist in Teams Developer Portal.",
   "error.teamsApp.InvalidAppIdError": "Teams app ID %s is invalid, must be a GUID.",
   "error.teamsApp.createAppPackage.invalidFile": "%s is invalid, it should be in the same directory as manifest.json or a subdirectory of it.",
   "driver.botFramework.description": "creates or updates the bot registration on dev.botframework.com",
-  "driver.botFramework.summary.create": "The bot registration has been created successfully (%s).",
-  "driver.botFramework.summary.update": "The bot registration has been updated successfully (%s).",
+  "driver.botFramework.summary.create": "Bot registration created successfully (%s).",
+  "driver.botFramework.summary.update": "Bot registration updated successfully (%s).",
   "driver.botFramework.progressBar.createOrUpdateBot": "Creating or updating bot registration.",
   "driver.botFramework.error.InvalidBotId": "Bot ID %s is invalid. It must be a GUID.",
-  "error.yaml.InvalidYamlSchemaError": "Unable to parse yaml file: %s. Please open the yaml file for detailed errors.",
-  "error.yaml.InvalidYamlSchemaErrorWithReason": "Unable to parse yaml file: %s. Reason: %s Please review the yaml file or upgrade to the latest Teams Toolkit.",
+  "error.yaml.InvalidYamlSchemaError": "Unable to parse yaml file: %s. Open the yaml file for detailed errors.",
+  "error.yaml.InvalidYamlSchemaErrorWithReason": "Unable to parse yaml file: %s. Reason: %s Review the yaml file or upgrade to the latest Teams Toolkit.",
   "error.yaml.VersionNotSupported": "version %s is not supported. Supported versions: %s.",
   "error.yaml.YamlFieldTypeError": "Field '%s' should have %s type, yaml file: %s",
   "error.yaml.YamlFieldMissingError": "Field '%s' is missing, yaml file: %s",
   "error.yaml.InvalidYmlActionNameError": "Action '%s' not found, yaml file: %s",
   "error.yaml.LifeCycleUndefinedError": "Lifecycle '%s' is undefined, yaml file: %s",
-  "error.yaml.InvalidActionInputError": "The '%s' action cannot be completed as the following parameter(s): %s, are either missing or have an invalid value in the provided yaml file: %s. Ensure that the required parameters are provided and have valid values and try again.",
-  "error.common.InstallSoftwareError": "Unable to install %s. You can install it manually and restart Visual Studio Code if you are using the Toolkit in Visual Studio Code.",
-  "error.common.VersionError": "Unable to find a version satisfying the version range %s.",
-  "error.common.MissingEnvironmentVariablesError": "The program cannot proceed because the following environment variables are missing: '%s' for file: %s. Please set them by editing the .env file '%s' or '%s', or the system environment variables with the correct names and values. For new Teams Toolkit projects, running provision or debug will register correct values for these environment variables.",
-  "error.common.InvalidProjectError": "This command only works for project created by Teams Toolkit. 'teamsapp.yml' or 'teamsapp.local.yml' not found",
-  "error.common.InvalidProjectError.display": "This command only works for project created by Teams Toolkit. Yaml file not found: %s",
+  "error.yaml.InvalidActionInputError": "The '%s' action can't be completed as the following parameter(s): %s are either missing or have an invalid value in the provided yaml file: %s. Make sure the required parameters are provided and have valid values and try again.",
+  "error.common.InstallSoftwareError": "Unable to install %s. Install it manually and restart Visual Studio Code if you are using the Toolkit in Visual Studio Code.",
+  "error.common.VersionError": "Unable to find a suitable version within the version range %s.",
+  "error.common.MissingEnvironmentVariablesError": "The program can't proceed as the following environment variables are missing: '%s', which are required for file: %s. Make sure the required variables are set either by editing the .env file '%s' with the correct names and values , or by setting the system environment variables with the correct names and values. If you are developing with a new project created with Teams Toolkit, running provision or debug will register correct values for these environment variables.",
+  "error.common.InvalidProjectError": "This command only works for project created by Teams Toolkit.",
   "error.common.FileNotFoundError": "The file or directory is not found: '%s'. Check if it exists and you have permission to access it.",
   "error.common.JSONSyntaxError": "JSON syntax error: %s. Check the JSON syntax to ensure it is properly formatted.",
   "error.common.ReadFileError": "Unable to read file for reason: %s",
diff --git a/packages/fx-core/tests/component/configManager/parser.test.ts b/packages/fx-core/tests/component/configManager/parser.test.ts
index e3c68271d4..b752c594f1 100644
--- a/packages/fx-core/tests/component/configManager/parser.test.ts
+++ b/packages/fx-core/tests/component/configManager/parser.test.ts
@@ -253,7 +253,7 @@ describe("v3 yaml parser", () => {
       chai
         .expect(errorMsg)
         .includes(`Unable to parse yaml file`)
-        .and.includes(`Please open the yaml file`);
+        .and.includes(`Open the yaml file for detailed errors`);
 
       result = await parser.parse(
         path.resolve(__dirname, "testing_data", "invalid_write_to_environment_file_number.yml"),
diff --git a/packages/fx-core/tests/component/driver/aad/create.test.ts b/packages/fx-core/tests/component/driver/aad/create.test.ts
index a3a7340352..1078815874 100644
--- a/packages/fx-core/tests/component/driver/aad/create.test.ts
+++ b/packages/fx-core/tests/component/driver/aad/create.test.ts
@@ -708,6 +708,6 @@ describe("aadAppCreate", async () => {
     expect(result.result._unsafeUnwrapErr())
       .is.instanceOf(UserError)
       .and.has.property("message")
-      .and.contains("action cannot be completed as the following parameter(s):");
+      .and.contains("action can't be completed as the following parameter(s):");
   });
 });
diff --git a/packages/fx-core/tests/core/FxCore.test.ts b/packages/fx-core/tests/core/FxCore.test.ts
index e8f281379c..90b4ec62f1 100644
--- a/packages/fx-core/tests/core/FxCore.test.ts
+++ b/packages/fx-core/tests/core/FxCore.test.ts
@@ -434,7 +434,7 @@ describe("Core basic APIs", () => {
       // Cannot assert the full message because the mocked code can't get correct env file path
       assert.include(
         res.error.message,
-        "The program cannot proceed because the following environment variables are missing: 'AAD_APP_OBJECT_ID' for file: fake path. Please set them by editing the .env file"
+        "The program can't proceed as the following environment variables are missing: 'AAD_APP_OBJECT_ID', which are required for file: fake path. Make sure the required variables are set either by editing the .env file"
       );
       assert.include(
         res.error.message,