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_articles/faq/file-damaged-on-macos.md

@@ -0,0 +1,46 @@
+---
+layout: default-layout
+noTitleIndex: true
+needAutoGenerateSidebar: true
+title: Why Do I Get a "File is Damaged and Can’t Be Opened" Error When Using the Dynamic Web TWAIN on macOS?
+keywords: Dynamic Web TWAIN, macos, Damaged, can't be opened
+breadcrumbText: Why Do I Get a "File is Damaged and Can’t Be Opened" Error When Using the Dynamic Web TWAIN on macOS?
+description: Why Do I Get a "File is Damaged and Can’t Be Opened" Error When Using the Dynamic Web TWAIN on macOS?
+date: 2025-12-08 07:56:47 +0800
+last_modified: 2025-12-08 07:56:47 +0800
+---
+
+# Why Do I Get a "File is Damaged and Can’t Be Opened" Error When Using the Dynamic Web TWAIN on macOS?
+
+### Symptom
+
+When attempt to use the scanner on macOS, an error message states “<xxx.ds> is damaged and can’t be opened”.
+
+![ds-is-damaged](/assets/imgs/ds-is-damaged.png)
+
+### Reason
+
+This issue is caused by macOS Gatekeeper, a security feature that blocks applications that are unsigned or not notarized when the file carries a quarantine attribute. The file itself is not damaged but Gatekeeper prevents it from running.
+
+The error message may also show an outdated download time, for example “Safari downloaded this file on `June 18, 2019`”, even on a new computer. This happens because macOS preserves the quarantine metadata when the file has been copied from sources such as:
+
+- An old computer
+- A USB drive
+- A company server
+- A backup (e.g., Time Machine restore)
+
+### Resolution
+
+This issue is not related to our product but stems from the unsigned driver.
+
+- Temporary Fix: Click “OK” on the error dialog. The driver often works normally afterward.
+
+- Permanent Fix (if error persists): Remove the “quarantine” attribute via Terminal:
+    - Open Terminal (/Applications/Utilities).
+    - Run this command:
+    ```bash
+    sudo xattr -rd com.apple.quarantine /Applications/{YourDriver}.app  
+    ```
+
+<div class="blockquote-warning"></div>
+> Only disable checks for trusted files. Verify the driver’s source is safe before proceeding.

_articles/faq/index.md

@@ -208,6 +208,7 @@ description: Dynamic Web TWAIN SDK Documentation FAQ
 31.  [Dynamic Web TWAIN prompts the .deb installer for Windows](/_articles/faq/incorrect-installer-for-windowsARM64.md)
 32.  [Why am I unable to load the TIFF file into Dynamic Web TWAIN?](/_articles/faq/unable-to-load-4-bit-tiff.md)
 33.  [Error message - CORS Errors caused by local network access permissions when using Chromium 142 and later](/_articles/faq/chromium-142-local-network-access-issue.md)
+34.  [Error message - File is Damaged and Can’t Be Opened in macOS](/_articles/faq/file-damaged-on-macos.md)
 
 ## Licensing and Purchase