diff --git a/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.css b/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.css
index 07eaf92d80..67959204ff 100644
--- a/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.css
+++ b/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.css
@@ -1,3 +1,7 @@
 :host {
     width: 100%;
-}
\ No newline at end of file
+}
+
+.error-dialog h3 {
+    margin: 16px 0;
+}
diff --git a/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.html b/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.html
index e34583395e..258d197f9e 100644
--- a/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.html
+++ b/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.html
@@ -40,4 +40,11 @@
     <button type="button" class="mdl-button" *ngIf="!hasFormKey() && isTaskActive()" (click)="onComplete()">
         {{ 'TASK_DETAILS.BUTTON.COMPLETE' | translate }}
     </button>
+    <dialog class="mdl-dialog error-dialog" #errorDialog>
+        <div class="mdl-dialog__content">
+            <h3>{{'TASK_DETAILS.ERROR.TITLE'|translate}}</h3>
+            <p>{{'TASK_DETAILS.ERROR.DESCRIPTION'|translate}}</p>
+            <button type="button" class="mdl-button" (click)="closeErrorDialog()">{{'TASK_DETAILS.ERROR.CLOSE'|translate}}</button>
+        </div>
+    </dialog>
 </div>
diff --git a/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.ts b/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.ts
index 5cd482dc12..b0c8fa8746 100644
--- a/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.ts
+++ b/ng2-components/ng2-activiti-tasklist/src/components/activiti-task-details.component.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import { Component, Input, OnInit, ViewChild, Output, EventEmitter, TemplateRef, OnChanges, SimpleChanges } from '@angular/core';
+import { Component, Input, OnInit, ViewChild, Output, EventEmitter, TemplateRef, OnChanges, SimpleChanges, DebugElement } from '@angular/core';
 import { AlfrescoTranslationService, AlfrescoAuthenticationService } from 'ng2-alfresco-core';
 import { ActivitiTaskListService } from './../services/activiti-tasklist.service';
 import { TaskDetailsModel } from '../models/task-details.model';
@@ -37,6 +37,9 @@ export class ActivitiTaskDetails implements OnInit, OnChanges {
     @ViewChild('activitichecklist')
     activitichecklist: any;
 
+    @ViewChild('errorDialog')
+    errorDialog: DebugElement;
+
     @Input()
     taskId: string;
 
@@ -215,10 +218,15 @@ export class ActivitiTaskDetails implements OnInit, OnChanges {
     }
 
     onFormError(error: any) {
+        this.errorDialog.nativeElement.showModal();
         this.onError.emit(error);
     }
 
     onExecuteFormOutcome(event: FormOutcomeEvent) {
         this.executeOutcome.emit(event);
     }
+
+    closeErrorDialog(): void {
+        this.errorDialog.nativeElement.close();
+    }
 }
diff --git a/ng2-components/ng2-activiti-tasklist/src/i18n/en.json b/ng2-components/ng2-activiti-tasklist/src/i18n/en.json
index f55ebd1fb9..96642c6c57 100644
--- a/ng2-components/ng2-activiti-tasklist/src/i18n/en.json
+++ b/ng2-components/ng2-activiti-tasklist/src/i18n/en.json
@@ -33,6 +33,11 @@
     },
     "CHECKLIST": {
       "NONE": "No checklist."
+    },
+    "ERROR": {
+      "TITLE": "Something went wrong",
+      "DESCRIPTION": "Could not complete the specified action. Please try again or check that you have permission.",
+      "CLOSE": "Close"
     }
   },
   "TASK_FILTERS": {