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If you have a good antivirus program installed, make sure it's up to date and then do a full scan of your system. If you don't have an antivirus app installed on your PC, Microsoft offers some solutions if you're running Windows 8.1 or Windows 10/11. If you're running Windows 8.1 or Windows 10/11, you already have Windows Defender.

Notes: You can either use an email address you own as a Microsoft account, or create a new address by choosing "Get a new email address" or "Use your email instead" when you sign up.

安裝 Windows 11. 當 Windows 11 升級已針對您的特定電腦進行測試並驗證之後，Windows Update 會指出它已準備好安裝。 若要檢查 Windows 11 是否已準備好安裝到您的裝置，請前往 [啟動] > [設定] > [更新與安全性] > Windows Update ，然後選取 [檢查更新]。 如果您的裝置可以升級，而您想要繼續進行，請下載並安裝它。

Import a text file by opening it in Excel. You can open a text file that you created in another program as an Excel workbook by using the Open command. Opening a text file in Excel does not change the format of the file — you can see this in the Excel title bar, where the name of the file retains the text file name extension (for example, .txt or .csv).

在 Xbox 360 上：玩家代号最多包含 15 个字符，包括空格。它们不能以数字开头。 在 Xbox One、Xbox Series X|S、Windows 上：玩家代号最多包含 12 个字符，包括空格。它们不能以数字开头。 如果收到一条消息，指出玩家代号不可用，这意味着你需要尝试其他玩家代号。

Microsoft Edge is the recommended browser by Microsoft. Support for Internet Explorer ended on June 15, 2022. Internet Explorer 11 has been permanently disabled through a Microsoft Edge update on certain versions of Windows 10.

Note: If you don't see Groups in the left pane, your organization may not have turned on Groups. See Also. Create a group in Outlook.com or Outlook on the web. Add and remove group members in Outlook. Join a group in Outlook. Schedule a meeting on a group calendar in Outlook.

If you have problems activating online or don't have an internet connection, you can activate by phone. Follow the “Activate using an Internet Connection” method below to attempt via the internet. Automated System & Live Support Advocate: To get the telephone number for activation support, follow the “Activate by Phone” method below ...

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