There are three methods to which you can activate your product: Online via the internet, by telephone using our automated systems, and by a live support advocate. Online: When you begin activation, Windows will try to use your internet connection to activate online.

Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

Select the relevant item and choose Request a refund. Provide the reasons for your request and select Next. If everything is correct, select Submit. When you request a refund, it may take 72 hours to process the request. We'll contact you with updates, or you can check the Refund status tab.

激活有助于验证你的 Windows 副本是否为正版，且未在超过 Microsoft 软件许可条款所允许数量的设备上使用。. 可通过三种方法激活产品：通过 internet 联机激活、使用自动化系统通过电话激活，以及通过实时支持人员激活。. 联机： 当你开始激活时，Windows 将尝试 ...

You use the SUMIF function to sum the values in a range that meet criteria that you specify. For example, suppose that in a column that contains numbers, you want to sum only the values that are larger than 5.

Optimizations for windowed games improves gaming on your PC by using a new presentation model for DirectX 10 and DirectX 11 games that appear in a window or in a borderless window.