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Windows help & learning
If you're a small business owner. Find the information you need to build, run, and grow your small business with Microsoft 365. Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.
Turn Windows Security on or off - Microsoft Support
When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app.
How to troubleshoot problems that occur when you start or use Word
Click Options, and then click File > Export. Name the file "Wddata.reg", and then save the file to the desktop. Click Edit > Delete, then click Yes. Exit the Registry Editor and start Word. If Word starts and works correctly, you have resolved the problem (a damaged Word Options registry key).
Free up drive space in Windows - Microsoft Support
If your Windows device is running low on storage, here are a few ways to free up some drive space. Select Start > Settings > System > Storage . Turn on Storage Sense to have Windows delete unnecessary files automatically. Select Start > Settings > System > Storage > Cleanup recommendations . Select the temporary files, unused files, files ...
Find your Wi-Fi network password in Windows - Microsoft Support
On another Windows PC or other device, connect to Wi-Fi as you normally would, and enter your Wi-Fi password when prompted. For more info about connecting to Wi-Fi, see Connect to a Wi-Fi network in Windows.
Change screen brightness in Windows - Microsoft Support
If you don't have a desktop PC and the slider doesn't appear or work, try updating the display driver. Select Search on the taskbar, type Device Manager, and then select Device Manager from the list of results.In Device Manager, select Display adapters, then select the display adapter.Press and hold (or right-click) the display adapter name, then select Update driver and follow the instructions.
Open OneDrive and upload files - Microsoft Support
Open the OneDrive mobile app and select Files or Recent. Select the file. If you need to install the Office mobile apps, see Set up Office apps and email on a mobile device. Upload a file or folder. In OneDrive, select Upload. In File Explorer, select the files and drag them to OneDrive. Note: To upload a folder, use Microsoft Edge or Google ...
Applies To: OneDrive (work or school)
Troubleshoot problems updating Windows - Microsoft Support
The following tips can help you pinpoint the issue affecting your device. Before you begin, make sure your device is plugged into a power source and connected to the internet. Then, try the steps listed below to get your PC to update. Some updates require administrator access. If your account doesn't have administrator access, see Create a ...
Tra cứu giá trị bằng hàm VLOOKUP, INDEX hoặc MATCH
Đối số thứ hai là phạm vi ô, C2-:E7, để tìm kiếm giá trị bạn muốn tìm. Đối số thứ ba là cột trong phạm vi ô có chứa giá trị mà bạn tìm kiếm. Đối số thứ tư là tùy chọn. Nhập TRUE hoặc FALSE. Nếu bạn nhập TRUE, hoặc bỏ trống đối số, hàm sẽ trả về kết quả ...
Applies To: Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Sign in to Xbox | Xbox Support
On the Choose an account screen, click the Microsoft account button.; On the Add your Microsoft account screen, enter the email address and password associated with your Microsoft account.; On the Make it yours screen, you'll have the option to make this Microsoft account your primary account. (This makes sign-in, settings, and syncing happen automatically for all other Microsoft services.)