Merge pull request #571 from dynamsoft-docs/preview

Preview

Author: lunaaaw

faq/failed-to-load-resource.md

@@ -33,21 +33,21 @@ In this case, if you are trying to access an application that integrates a versi
 Note: the new certificate from Dynamsoft will expire on December 8th, 2023. This means you will need to update the certificate again after this certificate expires.
      - Method 3. <a href="{{site.about}}getsupport.html" target="_blank">Contact Dynamsoft</a> for a new MSI for client-side.
 
-- For v17.2 or higher versions, use the new API <a href="{{site.info}}api/Dynamsoft_WebTwainEnv.html#updatecert" target="_blank">UpdateCert</a> to automatically update the client side certificate before it expires. The following is an sample code:
+- For v17.2 or higher versions, use the new API <a href="{{site.info}}api/Dynamsoft_WebTwainEnv.html#updatecert" target="_blank">UpdateCert</a> to automatically update the client side certificate before it expires. **Please go to dynamsoft.webtwain.install.js file in the Resource Folder and search the keyword "OnSSLCertInfo"**, add the following lines of code:
     ```javascript
-   // Add the code in dynamsoft.webtwain.config.js file
-    Dynamsoft.DWT.ServiceCertUpdateURL= "https://demo.dynamsoft.com/DWT/Resources/dist/cert.zip";
-    ```
-    ```javascript
-    // Add the code in dynamsoft.webtwain.install.js file
-    Dynamsoft.DWT.UpdateCert(
-        Dynamsoft.DWT.ServiceCertUpdateURL,
-        function () {
-        },
-        function (errorCode, errorString) {
-            console.log(errorString);
+    Dynamsoft.OnSSLCertInfo = function (sslExpiredDate) {
+        if ((sslExpiredDate - new Date()) / 86400000 < 15) { // Automatically updates 15 days before expiration
+            Dynamsoft.DWT.UpdateCert(
+                "https://demo.dynamsoft.com/DWT/Resources/dist/cert.zip",
+                function () {
+                    //Success callback
+                },
+                function (errorCode, errorString) {
+                console.log(errorString);
+                }
+            );
         }
-    );
+    };
     ```
 
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