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Merge pull request #583 from ztyyLV/Jackson-branch
Update failed-to-load-resource.md
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faq/failed-to-load-resource.md

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@@ -34,17 +34,17 @@ In case, you used our expired certificate - local.dynamsoft.com, as an official
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Set back to self-signed certificate "127.0.0.1" by comment the line `Dynamsoft.WebTwainEnv.Host = "local.dynamsoft.com"` or `Dynamsoft.DWT.Host="local.dynamsoft.com"` out. No need to worry about the expiry date of the certificate anymore.
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- **High Level Security Requirement (<font color=red>Please pay attention: you need to replace the certificate annually due to expiration</font>)**
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1. (<u>**Recommend**</u>) Set back to self-signed certificate "127.0.0.1". Dynamsoft understand the importance of information security and are committed to remaining one of the most security-compliant companies in the industry. Starting from April 9,2021, Dynamsoft become ISO 27001 certified. Though you are using a self-sign certificate, but all connections are limited to the device itself (127.0.0.1) which ensures the security in most cases.
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1. (**<u>Recommend</u>**) Set back to self-signed certificate "127.0.0.1". Dynamsoft understand the importance of information security and are committed to remaining one of the most security-compliant companies in the industry. Starting from April 9,2021, Dynamsoft become ISO 27001 certified. Though you are using a self-sign certificate, but all connections are limited to the device itself (127.0.0.1) which ensures the security in most cases.
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2. If you have to use "local.dynamsoft.com", the following methods can be taken:
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- Method 1 (<u>**Recommend**</u>). Take the advantage of new feature -- **Remote Scan** which released in v18.0. With Remote Scan, you can limit the number of Dynamsoft Service Installations to the minimum. For more details, please refer to [What is Remote Scan](https://www.dynamsoft.com/remote-scan/docs/introduction/).
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- Method 1 (**<u>Recommend</u>**). Take the advantage of new feature -- **Remote Scan** which released in v18.0. With Remote Scan, you can limit the number of Dynamsoft Service Installations to the minimum. For more details, please refer to [What is Remote Scan](https://www.dynamsoft.com/remote-scan/docs/introduction/).
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- Method 2. If you must fix the issue on a few client machines immediately, manually update the following cert files on the client-side machine. Click <a href="https://tst.dynamsoft.com/public/download/dwt/newcert/local.dynamsoft.com/newcert.zip" target="_blank">here</a> to download the new certificate and use the new server.pem.ldsc & server_key.pem.ldsc to replace the old one under **`C:\Windows\SysWOW64\Dynamsoft\DynamsoftService(DynamsoftServicex64)\cert`**. Then restart Dynamsoft Service.
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> Note: the new certificate from Dynamsoft will expire on <font color=red>December 8th, 2023</font>. This means you must update the certificate again after this certificate expires.
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- Method 3. <a href="{{site.about}}getsupport.html" target="_blank">Contact Dynamsoft</a> for a new MSI for client-side.
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- Method 4 (<u>**Convenience but not recommend**</u>). For v17.2 or higher versions, you can use the new API <a href="{{site.info}}api/Dynamsoft_WebTwainEnv.html#updatecert" target="_blank">UpdateCert</a> to automatically update 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:
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- Method 4 (**<u>Convenience but not recommend</u>**). For v17.2 or higher versions, you can use the new API <a href="{{site.info}}api/Dynamsoft_WebTwainEnv.html#updatecert" target="_blank">UpdateCert</a> to automatically update 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:
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```javascript
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Dynamsoft.OnSSLCertInfo = function (sslExpiredDate) {
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if ((sslExpiredDate - new Date()) / 86400000 < 15) { // Automatically updates 15 days before expiration
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};
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```
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***Please be aware of that the download may not work properly in all environments due to your company's security policy.***
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<!--
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1) Go to service directory, and find _DSConfiguration.ini_.

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