Sign in with Microsoft
Sign in or create an account.
Hello,
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.
Find your Windows product key - Microsoft Support
Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.
Applies To: Microsoft account dashboard
Avoid and report Microsoft technical support scams
If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.
Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Receive Remote Assistance Support from Microsoft
Remote Assistance Support from Microsoft allows a Microsoft support professional in another location to view your computer screen and work on your computer over a secured connection. Protect yourself from tech support scams. Before clicking 'I accept', review the: Agreement for Microsoft Services. Microsoft Software License Terms.
How your PC gaming account relates to your Microsoft Store account
The Xbox app on PC relies on two Microsoft accounts: the Microsoft Store account, and the Xbox account (your PC gaming account). The Microsoft Store account provides access to owned games, subscription benefits, and other Xbox app purchases made by that account.
Windows Update Troubleshooter - Microsoft Support
Check for Windows updates. Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.
获取有关数字代码或礼品卡的帮助 | Xbox Support
兑换数字代码. 所有 Xbox 数字代码长度均为 25 个字符,包括数字和字母,并且采用五组字符(每组包含五个字符)格式 (xxxxx-xxxxx-xxxxx-xxxxx-xxxxx)。. 如果你尝试在 Windows 或 Xbox 设备上兑换代码,请确保已正确输入所有 25 位数字。. 若要了解有关 Xbox 礼品卡和代码的 ...
Ways to install Windows 11 - Microsoft Support
Create Windows 11 installation media. On the Windows 11 software download page , select Create tool now and follow the instructions to install Windows 11. Warning: Microsoft recommends against installing Windows 11 on a device that does not meet the Windows 11 minimum system requirements.
Reset or recover your lost Microsoft account password
Follow these steps to reset your Microsoft account password. If you know the email address that you used to set up your Microsoft account (which is used to sign in to your Xbox profile), you can reset your password now: Go to Reset your password and enter your email address.
Round a number to the decimal places I want - Microsoft Support
If you don’t want unnecessary decimal places in cells because they cause ###### symbols to appear, or you don’t need accuracy down to the microscopic level, change the cell format to get the number of decimal places you want.
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Mobile