When you send a digitally-signed macro or document, you also send your certificate and public key. Certificates are issued by a certification authority, and like a driver’s license, can be revoked.

This Boolean setting enables the Device Registration Service (DRS) on a federation server that is running Windows Server 2012 R2 to exempt the validity dates of certificates for Apple iOS devices.

We're sorry you're having trouble with your OneDrive for iOS mobile app. Let's get the issue sorted out as quickly as possible. Note: Some apps and features may only work with Wi-Fi, depending on your device settings, or your mobile data plan.

Open the protected file (for example, by double-clicking the file or attachment, or by clicking the link to the file). If you are prompted to select an app, select Open with > Information Protection Viewer. If you see a page to Sign in or Sign up, click Sign in and enter your credentials.

We are working on an update to the Mac and iOS applications to support signing in by using an alternative user identifier. To resolve this issue, update to the latest version of Mac and iOS apps.

The Signature Details dialog box displays certificate information such as the signer’s name in the Signing as box, and who issued the certificate. Open the file that contains the certificate you want to view.

The files you save to the Files app on your iOS device show up automatically, but you’ll need to set up other third-party cloud storage services to get access to them in Files.

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.

A file in SharePoint, OneDrive, or Teams is blocked. What do you do? Read this article to learn why this is happening and steps you can take.

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.