Consider the following scenario: You add a user account to the domain Backup Operators group or to the local Backup Operators group. You use this account to log on to a computer that is running Windows 7 or Windows Server 2008 R2.

Block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel. If you're trying to remove malware, you can use Windows Security (or another antivirus tool), or you can use the Windows Malicious Software Removal tool.

Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin. Recovery on cloud storage and network file shares is not supported.

When you do this, users cannot install a USB storage device on the computer. To assign a user or group Deny permissions to the Usbstor.pnf and Usbstor.inf files, follow these steps: Start Windows Explorer, and then locate the %SystemRoot%\Inf folder.

Begin with the Basic troubleshooting section below. If none of those steps correct the connection error, check the Error-specific troubleshooting section to see if additional steps are listed for your specific error message. If you don’t see your error message listed, move on to the Additional troubleshooting section.

To begin troubleshooting, find the section below that best describes the type of connection issue you’re experiencing, then follow the steps provided: I get an error message when I test my connection. If your Xbox 360 console is unable to connect to Xbox Live, the first step is to run the network connection test on your console.

Windows Update customers were recently affected by a network infrastructure event on January 29, 2019 (21:00 UTC), caused by an external DNS service provider’s global outage. A software update to the external provider’s DNS servers resulted in the distribution of corrupted DNS records that affected connectivity to the Windows Update service.

永久解决方案是在 Xbox 主机上或是第二个设备上更改静态 IP 地址。 或者，如果路由器能够分发动态 IP 地址，则这可保证 IP 地址冲突不会再次发生。 如果路由器可以分发动态 IP 地址，请将 Xbox 主机的 IP 设置配置为“自动”而非“手动”。 要实现此目的，请执行以下操作： 转到“设置”>“系统设置”>“网络设置”。 选择“有线网络”或你的无线网络的名称（如果系统提示你执行此操作）。 选择“配置网络”。 在“基本设置”选项卡上，选择“IP 设置”。 选择“自动”。 重新启动网络硬件之后，重新测试 Xbox Live 连接（“设置”>“系统设置”>“网络设置”，选择有线或无线网络，然后选择“测试 Xbox Live 连接”）。

Learn how to find your old files and move them to your new PC after upgrading to Windows 8.1.

Microsoft Office uses the XML-based file formats, such as .docx, .xlsx, and .pptx. These formats and file name extensions apply to Microsoft Word, Microsoft Excel, and Microsoft PowerPoint.