View the results of your scan. Open your Windows Security settings. Select Virus & threat protection > Protection history. The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. Learn how to remove malware from your PC.

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.

Microsoft generally releases the MSRT on a monthly cadence as part of Windows Update or as a standalone tool. (For exceptions, see Skipped releases.)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 would I want to run a scan? If you suspect your device may be infected, or if you want to confirm that a previous infection appears to be cleaned, you should have Defender start a scan. Signs that your device might have malware include: Suddenly running much slower than usual. Significant decrease in battery life.

Extract the Mrt.exe file from the package that is named Windows-KB890830-V5.123.exe /x. Create a .bat file to start Mrt.exe and to capture the return code by using ISMIF32.exe. The following is an example. @echo off Start /wait Mrt.exe /q If errorlevel 13 goto error13 If errorlevel 12 goto error12 Goto end :error13 Ismif32.exe –f MIFFILE –p ...

Microsoft Defender Antivirus and Windows Firewall are on your device to help protect it from viruses and other malicious software. But if you think they've missed something run Microsoft Defender Offline which can sometimes detect malware that others scanners missed. In Windows 10, Windows Defender and Windows Firewall helps protect your device ...

All Outlook Data Files (.pst) and Offline Data Files (.ost) are listed along with the name of the account the files are associated with. If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

Scan a picture or document with Windows Scan app. Find saved scans. Learn how to install a scanner and use it to scan pictures and documents in Windows 10.

The Windows Scan app can help you scan pictures or documents and save them to your PC as JPEG, bitmap, or PNG files. For more info, see Install and use a scanner in Windows. Get Windows Scan. Use your scanner and download an app from Microsoft Store to scan a document or picture to your PC.

Windows 11 Windows 10. When your camera isn't working in Windows 11, it might be missing drivers after a recent update. It's also possible that your antivirus program is blocking the camera, your privacy settings don't allow camera access for some apps, or there's a problem with the app you want to use. Before you begin.