OneDrive not connected. If you cannot sign in to your OneDrive sync app, or you see a message saying OneDrive is not connected, let our troubleshooter guide you through the steps to get syncing again, or follow the steps below.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

如果你不希望第三方站点在你的电脑上存储 Cookie，则可以阻止 Cookie。 但是执行此操作可能会导致某些页面无法正确显示，或者可能会从站点收到一条消息，通知你需要允许 Cookie 才能查看该站点。

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

In the search box on the taskbar, type Create a restore point, and select it from the list of results.

Contact Microsoft Office Support. Professional Direct Support for Microsoft 365 provides additional advisory support and proactive services to help plan, implement, maintain, and optimize Microsoft 365 solutions that align to your business's needs, as well as reactive support to assist you along the way.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

2. Fill out the form using a recognized device and location. If possible, complete the form using a device you previously used to sign into your account and at a location where you commonly use that device and that we'll recognize, such as your home or office.

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Important: Exchange Online on Microsoft 365 provides some search features via Microsoft Search.This includes suggested recipients when composing a new email. Starting with Outlook for Microsoft 365 Version 2202 (Build 14931.20604), if you are connected to an Exchange Online mailbox, the compose suggestions for To/CC/BCC are powered by Microsoft Search and some information in this article doesn ...