to complete an anti-virus or anti-malware scan depends
on a variety of factors
-- Using two security scanning engines at the same time can cause each to interfere with the other, cause systems hangs, false detections, unreliable results and other unpredictable behavior.
- The program itself and how its scanning engine is designed to scan: using a signature database vs heuristic scanning or a combination of both.
- Options to scan for spyware, adware, riskware and potentially unwanted programs (PUPS).
- Options to scan memory, boot sectors, registry and alternate data streams (ADS).
- Type of scan performed: Deep, Quick or Custom scanning.
- What action has to be performed when malware is detected.
- A computer's hard drive size.
- Disk size and used capacity (number of files that have to be scanned).
- Types of files (.exe, .dll, .sys, .cab, archived, compressed, packed, email, etc) that are scanned.
- Whether external drives are included in the scan.
- Competition for and utilization of system resources by the scanner.
- Other running processes and programs in the background.
- Whether it stalls, hangs or freezes.
- Interference from malware.
- Interference from the user (whether or not you use the computer during the scan).
-- If the screensaver, hibernation or Sleep Mode are not turned off before scanning, those features can sometimes have odd effects when attempting to resume normal mode.To resolve scanning issues
, uninstall unnecessary programs, clean out temporary files
, temporarily disable any other real-time protection tools
, close all open programs, only perform a Quick Scan
and do not use the computer during the scan
Malwarebytes Anti-Malware is designed
to remove malware as effectively with a Quick Scan as it will with a Full Scan which takes much longer to complete. Both scans use heuristics
that bypasses polymorphic blackhat packers & encryption, MD5 Hash
, check memory (loaded .exes and .dlls), unique strings, autostart load points and hotspots (everywhere current malware is known to load from) and multiple other malware checks which are not discussed in public to safeguard the program from malware writers who would use that information for nefarious purposes. The Quick Scan
looks at the most prevalent places for active malware so scanning every single file on the drive isn't always necessary. The Full Scan
only has the ability to catch more traces in rare circumstances.
If that does not help, then perform your scan in safe mode
". Scanning with Malwarebytes in safe or normal mode will work but removal functions are not as powerful in safe mode. MBAM is designed to be at full power when malware is running so safe mode is not necessary when using it. In fact, MBAM loses some effectiveness
for detection & removal when used in safe mode because the program includes a special driver which does not work in safe mode. Further, scanning in safe mode prevents some types of malware from running so it may be missed during the detection process. Additionally, there are various types of malware infections which target the safeboot keyset so booting into safe mode is not always possible. For optimal removal, normal mode is recommended
so it does not limit the abilities of MBAM but sometimes there is no alternative but to do a safe mode scan. If that is the case, after completing a safe mode scan, reboot normally, update the database definitions
through the program's interface (preferable method
) and try rescanning again.