HOW TO USE WINDOWS DEFENDER OFFLINE ON A USB STICK
Windows Defender Offline
is a free standalone
, bootable malware and virus remover
performs an offline scan of an infected PC to remove viruses, rootkits and other advanced malware.
Download Windows Defender Offline
(about 764 kB)
You will have the choice of downloading the 32bit version (x86) or the 64 bit version (x64).
The link will help you determine whether you are running a 32 bit version or 64 bit version of Windows
NOTE!! You can download and prepare a 32 bit version using a 64 bit version of Windows
NOTE!! You can download and prepare a 64 bit version using a 32bit version of Windows.
You run the 32 bit version on a 32 bit version of Windows.
You run the 64 bit version on a 64 bit version of Windows.
The 32 bit download file name is: mssstool32.exe
The 64 bit download file name is: mssstool64.exe
For the curious, this program was originally name M
You will need an Internet Connection.
Insert 512 mB (Microsoft’s 256 mB is no longer accurate) or larger USB stick into a usb port.
Run the downloaded program--mssstool64.exe
Choose the option On a USB flash drive that is not password protected
The install program will format the usb stick using the NTFS format.
The install program will download about 210 mB.
The install program will name the USB stick WDO_Media32
The WDO_Media32 usb stick will have used space of 255 mB (268,140,544 bytes)
The WDO_Media64 usb stick will have used space of 282 mB (296,165,376 bytes)
You can expect the number of mB to increase as more malware appears.
UPDATE Windows Defender Offline USB stick
reinsert the usb stick
run the installation program, mssstool64.exe
the update will download about 66 mB (mssstool32.exe) and 68 mB (mssstool64.exe).
Since the malware database is sometimes updated several times in a day, always update before running.
PERFORM AN OFFLINE SCAN
Bootup your computer from the USB stick
Windows Defender Offline will automatically perform a quick scan.
After the quick scan finishes, Choose Full Scan
of your drives
The initial, full scan
can easily take several hours, but
Remember, your computer is being very thoroughly checked for all types of malware.