diff --git a/web/app.js b/web/app.js
index 1356ea627..704ac1b95 100644
--- a/web/app.js
+++ b/web/app.js
@@ -949,22 +949,22 @@ const PDFViewerApplication = {
       pdfDocument => {
         this.load(pdfDocument);
       },
-      exception => {
+      reason => {
         if (loadingTask !== this.pdfLoadingTask) {
           return undefined; // Ignore errors for previously opened PDF files.
         }
 
         let key = "loading_error";
-        if (exception instanceof InvalidPDFException) {
+        if (reason instanceof InvalidPDFException) {
           key = "invalid_file_error";
-        } else if (exception instanceof MissingPDFException) {
+        } else if (reason instanceof MissingPDFException) {
           key = "missing_file_error";
-        } else if (exception instanceof UnexpectedResponseException) {
+        } else if (reason instanceof UnexpectedResponseException) {
           key = "unexpected_response_error";
         }
         return this.l10n.get(key).then(msg => {
-          this._documentError(msg, { message: exception?.message });
-          throw exception;
+          this._documentError(msg, { message: reason?.message });
+          throw reason;
         });
       }
     );
@@ -1368,11 +1368,18 @@ const PDFViewerApplication = {
         });
     });
 
-    pagesPromise.then(() => {
-      this._unblockDocumentLoadEvent();
+    pagesPromise.then(
+      () => {
+        this._unblockDocumentLoadEvent();
 
-      this._initializeAutoPrint(pdfDocument, openActionPromise);
-    });
+        this._initializeAutoPrint(pdfDocument, openActionPromise);
+      },
+      reason => {
+        this.l10n.get("loading_error").then(msg => {
+          this._documentError(msg, { message: reason?.message });
+        });
+      }
+    );
 
     onePageRendered.then(data => {
       this.externalServices.reportTelemetry({
diff --git a/web/base_viewer.js b/web/base_viewer.js
index 3ea105873..931958ced 100644
--- a/web/base_viewer.js
+++ b/web/base_viewer.js
@@ -530,12 +530,14 @@ class BaseViewer {
       this.eventBus.dispatch("scrollmodechanged", { source: this, mode });
     }
 
-    this._pagesCapability.promise.then(() => {
-      this.eventBus.dispatch("pagesloaded", {
-        source: this,
-        pagesCount,
-      });
-    });
+    this._pagesCapability.promise.then(
+      () => {
+        this.eventBus.dispatch("pagesloaded", { source: this, pagesCount });
+      },
+      () => {
+        /* Prevent "Uncaught (in promise)"-messages in the console. */
+      }
+    );
 
     this._onBeforeDraw = evt => {
       const pageView = this._pages[evt.pageNumber - 1];
@@ -680,6 +682,8 @@ class BaseViewer {
       })
       .catch(reason => {
         console.error("Unable to initialize viewer", reason);
+
+        this._pagesCapability.reject(reason);
       });
   }