Certificates are issued by a certification authority, and like a driver’s license, can be revoked. A certificate is usually valid for a year, after which, the signer must renew, or get a new, signing certificate to establish identity.

For iOS, you'll first need to install TestFlight on your iOS device. You can find it here or in the App Store. Once TestFlight is installed, you can join from your device. You'll then be able to download and install our beta app via TestFlight.

Certificates are moved to the device via email. You will need to export a password-protected .pfx file, and email it to yourself. Then tap on that .pfx file to install it onto the device/Outlook mobile. The following image shows how manual certificate delivery works in iOS.

Microsoft Intune delivers certificates automatically to Outlook for iOS. To obtain or renew your certificates, please follow the instructions in the notification or email you received from Company Portal.

If you do not want to purchase a digital certificate from a third-party certificate authority (CA), or if you want to digitally sign your document immediately, you can create your own digital certificate.

Certificates can be obtained by exporting a password-protected .pfx file from Microsoft Outlook and emailing these to yourself. Tap on the .pfx attachment to begin the certificate installation. You can contact your IT help desk for assistance.

To complete renewal, you need to go to Microsoft365.com/setup and enter the product key you got at the store, or follow the link in your email receipt. If you can't find your email receipt, check your junk mail folder.

Thanks for your help and hopefully you'll enjoy some of our features before the public receives them! Because we have limited spots, it might take some time for you to get an invitation. But as soon as there are some available, we'll be sending you a message. Was this information helpful?

If you see a notice to buy, renew, or reactivate your Microsoft 365 subscription when you open Word, Excel, or any other Office application, you'll need to take action in order to keep using Office.

Before you can import a digital ID (Certificates), you need to already have the digital ID and know where it is on your device. Use the following instructions to either import or export a digital ID in new Outlook.