The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Add or remove a digital signature in Office files. Get a digital ID. Find digital ID or digital signature services. About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

Sign in to SharePoint. SharePoint is a browser-based app that you connect to through your web browser, like so: Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint.

Troubleshooting verification code issues. Avoid and report Microsoft technical support scams. Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors. Tips: If you're using mobile data, try switching to Wi-Fi and vice-versa. Make sure Airplane mode is off.

Get Microsoft account help. Manage your personal account from a single dashboard, including payment information, purchases, subscriptions, and more. Go to your dashboard. You can use a Microsoft account, or a work or school account to sign into your Windows device.

An invisible digital signature, like a visible digital signature line, assures the authenticity, integrity, and origin of a document. You can add invisible digital signatures to Word documents, Excel workbooks, and PowerPoint presentations. Signed documents will have the Signatures button at the bottom of the document.

Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Set up Office apps and email on a mobile device. Small business help and learning. Learn how to download and install apps you need from your Microsoft 365 business subscription.

You can set up an authenticator app to send a notification to your mobile device or to send you a verification code as your security verification method. You aren't required to use the Microsoft Authenticator app, and you can select a different app during the set up process.

How to check if your email address is a Microsoft account. If you can't remember your account name, use these steps to try to get back into your Microsoft account.