diff --git a/packaging/tests/tas-cmis/src/main/java/org/alfresco/cmis/AuthParameterProviderFactory.java b/packaging/tests/tas-cmis/src/main/java/org/alfresco/cmis/AuthParameterProviderFactory.java
index d6b9202f77..891557791b 100644
--- a/packaging/tests/tas-cmis/src/main/java/org/alfresco/cmis/AuthParameterProviderFactory.java
+++ b/packaging/tests/tas-cmis/src/main/java/org/alfresco/cmis/AuthParameterProviderFactory.java
@@ -4,8 +4,6 @@ import org.alfresco.utility.data.AisToken;
 import org.alfresco.utility.data.auth.DataAIS;
 import org.alfresco.utility.model.UserModel;
 import org.apache.chemistry.opencmis.commons.SessionParameter;
-import org.keycloak.authorization.client.util.HttpResponseException;
-import org.keycloak.representations.AccessTokenResponse;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
@@ -86,9 +84,9 @@ public class AuthParameterProviderFactory
             parameters.put(SessionParameter.OAUTH_REFRESH_TOKEN, aisToken.getRefreshToken());
             parameters.put(SessionParameter.OAUTH_EXPIRATION_TIMESTAMP, String.valueOf(System.currentTimeMillis()
                     + (aisToken.getExpiresIn() * 1000))); // getExpiresIn is in seconds
-            parameters.put(SessionParameter.OAUTH_TOKEN_ENDPOINT, cmisProperties.aisProperty().getAdapterConfig().getAuthServerUrl()
+            parameters.put(SessionParameter.OAUTH_TOKEN_ENDPOINT, cmisProperties.aisProperty().getAuthServerUrl()
                     + "/realms/alfresco/protocol/openid-connect/token");
-            parameters.put(SessionParameter.OAUTH_CLIENT_ID, cmisProperties.aisProperty().getAdapterConfig().getResource());
+            parameters.put(SessionParameter.OAUTH_CLIENT_ID, cmisProperties.aisProperty().getResource());
             return parameters;
         }
 
@@ -110,10 +108,10 @@ public class AuthParameterProviderFactory
                 // Attempt to get an access token for userModel from AIS
                 aisToken = dataAIS.perform().getAccessToken(userModel);
             }
-            catch (HttpResponseException e)
+            catch (AssertionError e)
             {
                 // Trying to authenticate with invalid user credentials so return an invalid access token
-                if (e.getStatusCode() == 401)
+                if (e.getMessage().contains("invalid_grant"))
                 {
                     STEP(String.format("%s Invalid user credentials were provided %s:%s. Using invalid token for reqest.",
                             STEP_PREFIX, userModel.getUsername(), userModel.getPassword()));
diff --git a/packaging/tests/tas-restapi/src/main/java/org/alfresco/rest/core/RestAisAuthentication.java b/packaging/tests/tas-restapi/src/main/java/org/alfresco/rest/core/RestAisAuthentication.java
index 5fe12f930f..2c33eda6ad 100644
--- a/packaging/tests/tas-restapi/src/main/java/org/alfresco/rest/core/RestAisAuthentication.java
+++ b/packaging/tests/tas-restapi/src/main/java/org/alfresco/rest/core/RestAisAuthentication.java
@@ -30,7 +30,6 @@ import static org.alfresco.utility.report.log.Step.STEP;
 import org.alfresco.utility.data.AisToken;
 import org.alfresco.utility.data.auth.DataAIS;
 import org.alfresco.utility.model.UserModel;
-import org.keycloak.authorization.client.util.HttpResponseException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
@@ -86,12 +85,11 @@ public class RestAisAuthentication
             // Attempt to get an access token for userModel from AIS
             aisToken = dataAIS.perform().getAccessToken(userModel);
         }
-        catch (HttpResponseException e)
+        catch (AssertionError e)
         {
             // Trying to authenticate with invalid user credentials or disabled
             // user so return an invalid access token
-            String httpResponse = new String(e.getBytes());
-            if (e.getStatusCode() == 401 || httpResponse.contains(USER_DISABLED_MSG))
+            if (e.getMessage().contains("invalid_grant"))
             {
                 STEP(String.format("%s User disabled or invalid user credentials were provided %s:%s. Using invalid token for request.", STEP_PREFIX,
                         userModel.getUsername(), userModel.getPassword()));
diff --git a/pom.xml b/pom.xml
index 3878140982..0abeb08b4b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -123,7 +123,7 @@
         <dependency.mysql.version>8.0.30</dependency.mysql.version>
         <dependency.mysql-image.version>8</dependency.mysql-image.version>
         <dependency.mariadb.version>2.7.4</dependency.mariadb.version>
-        <dependency.tas-utility.version>3.0.61</dependency.tas-utility.version>
+        <dependency.tas-utility.version>4.0.0</dependency.tas-utility.version>
         <dependency.rest-assured.version>5.2.0</dependency.rest-assured.version>
         <dependency.tas-email.version>1.11</dependency.tas-email.version>
         <dependency.tas-webdav.version>1.7</dependency.tas-webdav.version>