diff --git a/lib/core/viewer/components/viewer.component.spec.ts b/lib/core/viewer/components/viewer.component.spec.ts
index ad230bbdf2..27fe94af6a 100644
--- a/lib/core/viewer/components/viewer.component.spec.ts
+++ b/lib/core/viewer/components/viewer.component.spec.ts
@@ -592,6 +592,41 @@ describe('ViewerComponent', () => {
             }));
         });
 
+        describe('error handling', () => {
+
+            it('should show unknown view when node file not found', async(() => {
+                spyOn(alfrescoApiService.getInstance().nodes, 'getNodeInfo')
+                    .and.returnValue(Promise.reject({}));
+
+                component.nodeId = 'the-node-id-of-the-file-to-preview';
+                component.urlFile = null;
+                component.mimeType = null;
+
+                component.ngOnChanges(null);
+                fixture.whenStable().then(() => {
+                    fixture.detectChanges();
+                    expect(element.querySelector('adf-viewer-unknown-format')).not.toBeNull();
+                });
+            }));
+
+            it('should show unknown view when sharedLink file not found', async(() => {
+                spyOn(alfrescoApiService.getInstance().core.sharedlinksApi, 'getSharedLink')
+                    .and.returnValue(Promise.reject({}));
+
+                component.sharedLinkId = 'the-Shared-Link-id';
+                component.urlFile = null;
+                component.mimeType = null;
+
+                component.ngOnChanges(null);
+                fixture.whenStable().then(() => {
+                    fixture.detectChanges();
+                    expect(element.querySelector('adf-viewer-unknown-format')).not.toBeNull();
+                });
+
+            }));
+
+        });
+
         describe('MimeType handling', () => {
 
             it('should display a PDF file identified by mimetype when the filename has no extension', async(() => {
diff --git a/lib/core/viewer/components/viewer.component.ts b/lib/core/viewer/components/viewer.component.ts
index e0f08ecd40..baecf60df6 100644
--- a/lib/core/viewer/components/viewer.component.ts
+++ b/lib/core/viewer/components/viewer.component.ts
@@ -298,10 +298,15 @@ export class ViewerComponent implements OnChanges, OnInit, OnDestroy {
                 );
             } else if (this.sharedLinkId) {
 
-                this.apiService.sharedLinksApi.getSharedLink(this.sharedLinkId).then(details => {
-                    this.setUpSharedLinkFile(details);
-                    this.isLoading = false;
-                });
+                this.apiService.sharedLinksApi.getSharedLink(this.sharedLinkId).then(
+                    details => {
+                        this.setUpSharedLinkFile(details);
+                        this.isLoading = false;
+                    },
+                    () => {
+                        this.isLoading = false;
+                        this.logService.error('This sharedLink does not exist');
+                    });
             }
         }
     }