diff --git a/libraries/microsoft-agents-authentication-msal/microsoft_agents/authentication/msal/msal_auth.py b/libraries/microsoft-agents-authentication-msal/microsoft_agents/authentication/msal/msal_auth.py
index 81619e58..2fc9f1c4 100644
--- a/libraries/microsoft-agents-authentication-msal/microsoft_agents/authentication/msal/msal_auth.py
+++ b/libraries/microsoft-agents-authentication-msal/microsoft_agents/authentication/msal/msal_auth.py
@@ -146,9 +146,7 @@ async def acquire_token_on_behalf_of(
                 )
 
                 if "access_token" not in token:
-                    logger.error(
-                        f"Failed to acquire token on behalf of user: {user_assertion}"
-                    )
+                    logger.error(f"Failed to acquire token on behalf of user.")
                     raise ValueError(
                         authentication_errors.FailedToAcquireToken.format(str(token))
                     )
diff --git a/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/_oauth/_oauth_flow.py b/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/_oauth/_oauth_flow.py
index d886d40e..27ae4a96 100644
--- a/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/_oauth/_oauth_flow.py
+++ b/libraries/microsoft-agents-hosting-core/microsoft_agents/hosting/core/_oauth/_oauth_flow.py
@@ -126,7 +126,7 @@ async def get_user_token(self, magic_code: str | None = None) -> TokenResponse:
             magic_code=magic_code,
         )
         if token_response:
-            logger.info("User token obtained successfully: %s", token_response)
+            logger.info("User token obtained successfully")
             self._flow_state.expiration = (
                 datetime.now(timezone.utc).timestamp() + self._default_flow_duration
             )
@@ -315,10 +315,7 @@ async def continue_flow(self, activity: Activity) -> _FlowResponse:
             self._flow_state.expiration = (
                 datetime.now(timezone.utc).timestamp() + self._default_flow_duration
             )
-            logger.debug(
-                "OAuth flow completed successfully, got TokenResponse: %s",
-                token_response,
-            )
+            logger.debug("OAuth flow completed successfully, got a token response.")
 
         return _FlowResponse(
             flow_state=self._flow_state.model_copy(),