There are various reasons why a CD or DVD drive is not detected. The resolutions that are listed in this article may help solve some instances but not all instances of this problem.

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.

Know your limits Many email service providers set limits for the number of names that can be included in the To, Cc, and Bcc boxes in a message. For example, your email service provider may limit each message to a maximum of 100 email addresses. If these addresses are distributed among the To, Cc, and Bcc boxes, remember that the names in the Bcc box will count toward your total limit.

Check the Xbox services, games, and apps for any service outages.

The steps to access the repair tool vary depending on your operating system. Right-click the Start button (lower-left corner) and select Apps and Features on the pop-up menu.

Disable all macros except digitally signed macros Macros are disabled, and security alerts appear if there are unsigned macros present.However, if the macro is digitally signed by a trusted publisher, the macro just runs. If the macro is signed by a publisher you haven't trusted yet, you are given the opportunity to enable the signed macro and trust the publisher.

解决安装 Windows SP1 时遇到的问题. 如果你尝试安装 SP1 并看到指示安装未成功的错误消息，这可能是因为用于安装更新的 Windows 维护服务商店出现问题，或者是因为你的防病毒软件阻止安装更新。

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1. On your computer keyboard, press the Windows key and R at the same time to open the Run dialog box.

Scenario. Description. Recommended Solution. Add Teams meeting add-in for Outlook. Helps fix the issue where teams meeting add-in is missing or is not loaded, preventing you from creating teams meeting from Outlook.