Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

When you click a link in a program, the link does not work. Your web browser suddenly closes or stops responding. It takes a much longer time to start or to resume your computer. Components of Windows or other programs no longer work.

To resolve this issue, exclude the Hosts file from scanning in Windows Defender. To do this, follow these steps: Open Windows Defender. On the Settings tab, click Excluded files and locations. Under File locations, click Browse. Locate and then click the Hosts file.

Microsoft has learned of a Trojan horse program that is named W32/Berbew (variants A-H) that is downloaded after a Microsoft Windows-based client computer is infected with the Download.Ject malware.

When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

To resolve this issue, you can either delete the contents of the Windows\Temp folder from a command prompt, or you can increase the amount of disk space that is available on the drive in which the Temp folder resides. To delete the contents of the Temp folder from a command prompt, follow these steps:

The PresentationHost.exe process runs with a restricted process token. The process gives up membership in the Administrators security group and in the Power Users security group.

Some icons in My Computer, in Windows Explorer, on the desktop, or on the Quick Launch Bar change randomly. Troubleshoots and fixes common issues with file and folder operations in Windows.

Fixes an issue in which both the Svchost.exe process and the Lsm.exe process consume lots of CPU resources. This issues occurs after you remotely connect to a computer that is running Windows 7 or Windows Server 2008 R2.

In System Center Operations Manager, agents may consume 100 percent of CPU resources for the Monitoringhost.exe process. To resolve this problem, apply hotfix 968967. For more information, click the following article number to view the article in the Microsoft Knowledge Base: