Registering Printer's Root Certificate to Web Browser for SSL Communication (Remote UI)
If the printer's root certificate has not been registered to the web browser, a message to warn you that the secure connection is not guaranteed may appear.
When you display Remote UI for the first time on your smartphone, tablet, or computer, download the root certificate, and then register it to the web browser. The secure connection will be confirmed and a message will not appear. However, the message may appear depending on a web browser even after you have registered the root certificate.
How to register the root certificate varies depending on the web browser.
Operating procedure may differ depending on the version of your web browser. For other web browser, refer to each help.
Important
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Make sure that you have accessed to the printer IP address correctly by checking the URL field of the web browser before registering the root certificate.
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If the printer is connected via IPv6 using Windows, you need to generate a server certificate using Remote UI.
For details, see Generating Server Certificate (Self-signed Certificate).
For Internet Explorer
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Select For secure communication on Remote UI.
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Select Download.
Downloading the root certificate is started.
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If confirmation screen appears, select Open.
Certificate screen is displayed.
Note-
To save the certificate file to your device and register it, select Save. Select Internet options from Tool menu of Internet Explorer, register the root certificate from Certificates on Content sheet.
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Select Install Certificate.
Certificate Import Wizard screen is displayed.
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Select Next.
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Select Place all certificates in the following store.
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Select Browse.
Select Certificate Store screen is displayed.
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Select Trusted Root Certification Authorities and OK.
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Select Next on Certificate Import Wizard screen.
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If Completing the Certificate Import Wizard appears, select Finish.
Security Warning screen is displayed.
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Make sure that thumbprint on Security Warning screen matches printer's thumbprint.
The printer's thumbprint is displayed in Root cert. thumbprint (SHA-1) column or Root cert. thumbprint (SHA-256) column when tapped in the following order.
(Setup) > Printer information > System information -
If thumbprint on Security Warning screen matches printer's thumbprint, select Yes.
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Select OK on Certificate Import Wizard screen.
The root certificate registration is completed.
For Safari
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Select For secure communication on Remote UI.
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Select Download.
Downloading the root certificate is started.
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Open the downloaded file.
Keychain access starts up and Add Certificates screen is displayed.
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Select Add.
Information on the certificate is displayed.
Note- You can also add the certificate by selecting Show Certificate, checking certificate name to add, and then selecting the same certificate on Keychain access.
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Make sure that fingerprint of certificate detail information matches printer's thumbprint.
The printer's thumbprint is displayed in Root cert. thumbprint (SHA-1) column or Root cert. thumbprint (SHA-256) column when tapped in the following order.
(Setup) > Printer information > System information -
If fingerprint of certificate detail information matches printer's thumbprint, display information on certificate from the menu or by double-clicking the certificate, and select Always Trust on Trust.
The root certificate registration is completed.
Note- If a password is set on your device, entering a password may be required.
For Chrome on Android
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Select For secure communication on Remote UI.
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Select Download.
Downloading the root certificate is started and then Name the certificate screen is displayed.
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As entering the root certificate name is required, enter an arbitrary certificate name and select OK.
The root certificate registration is completed.
Note- If PIN or password is not set as security type, the attention screen may appear. Select OK, and then set the security type to PIN or password.
After Root Certificate Registration
We recommend that you make sure that the correct root certificate has been registered.
To make sure that the correct root certificate has been registered, make sure that thumbprint of certificate information matches printer's thumbprint. Follow the steps below.
Note
- Some Android devices cannot be checked the thumbprint of a registered route certificate.
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From Settings menu on your device, select Security, Trust credentials, and USER.
The list of downloaded certificates appears.
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Select downloaded certificate.
The certificate information appears.
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Make sure that thumbprint of certificate information matches printer's thumbprint.
The printer's thumbprint is displayed in Root cert. thumbprint (SHA-1) column or Root cert. thumbprint (SHA-256) column when tapped in the following order.
(Setup) > Printer information > System information -
If thumbprint of certificate information screen matches printer's thumbprint, select OK.
The root certificate registration is completed.
If the message to warn you that the secure connection is not guaranteed appears when you select Log in on Remote UI after registering the root certificate, restart the web browser. The message will not appear on the web browser.
Note
- Depending on the Android device, a warning may appear even after registering the proper root certificate.
For Mobile Safari on iOS
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Select For secure communication on Remote UI.
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Select Download.
Downloading the root certificate is started and then Install Profile screen is displayed.
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Select Install.
Warning screen is displayed.
Note- If a password is set on your device, entering a password may be required.
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Select Install.
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Select Install on displayed dialog.
The root certificate registration is completed.
