Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe)

Microsoft is aware of new variants of the class of attack known as speculative execution side-channel vulnerabilities. The variants are named L1 Terminal Fault (L1TF) and Microarchitectural Data Sampling (MDS). An attacker who can successfully exploit L1TF or MDS may be able to read privileged data across trust boundaries.

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Fixes an issue in which BITS peer caching does not work in a domain environment. This issue occurs in Windows Vista or in Windows Server 2008 when a disjoint namespace exists in the domain.

What it fixes. The troubleshooter helps fix problems that: Corrupt registry keys on 64-bit operating systems. Corrupt registry keys that control the update data. Prevent new programs from being installed. Prevent existing programs from being completely uninstalled or updated.

The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.

There are two scenarios for domain join with respective default behaviors and flags as follows: Domain Join (NetJoinDomain) Defaults to account reuse (unless NETSETUP_NO_ACCT_REUSE flag is specified) Account provisioning (NetProvisionComputerAccountNetCreateProvisioningPackage).

To resolve this issue, follow these instructions for your version of Windows. Windows 11 Windows 10. Hold the power button for 10 seconds to turn off your device and then press the power button again to turn on your device. On the Windows sign-in screen, press and hold the Shift key while you select Power > Restart.

Summary. Security updates released on and after July 6, 2021 contain protections for a remote code execution vulnerability in the Windows Print Spooler service (spoolsv.exe) known as “PrintNightmare”, documented in CVE-2021-34527. After installing the July 2021 and later updates, non-administrators, including delegated admin groups like ...