How long does windows defender full scan take? (Answered)

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Here is all information about how long does windows defender full scan take? The usage of antivirus software can help shield your computer from malware and other security risks. You shouldn’t typically turn off your antivirus program.

If you must temporarily disable it to install more software, you should immediately enable it again after finishing. Your computer is exposed to attacks if it is connected to the Internet or a network and your antivirus software is turned off.

windows defender full scan take

How long does windows defender full scan take?

Windows Defender offers two different options: A full scan checks every file and folder on each of your hard drives, while a quick scan only checks the most likely places on your computer to be infected. How long it takes to do a full scan depends on how many files and folders you have on your computer. In general, the scan will take longer to finish if you have more files. You can use your computer while a scan is going on, but doing so will make it take longer. To keep your office from being closed as much, you might want to do full scans overnight.

Multiple Hard Drives:

A full system scan may take longer on a computer with multiple hard drives or one primary drive that is partitioned (divided into different drive letters) than on a computer with just one drive.

The full scan is configured by default to check every file on your computer so that it will scan every drive, including any USB drives and external hard drives currently plugged into the computer. Disconnect your external hard drive before running the complete scan if you’re not concerned about a possible virus danger on it.

Disk Fragmentation:

As you use your computer and accumulate more files and folders, your hard drive may get increasingly fragmented, a phrase that refers to the dispersion of data over the hard disk’s physical layers. A full system check with Windows Defender will take longer if your hard drive is fragmented, just like it takes longer for Windows programs to access files and directories.

To start a program that compacts and speeds up access to the data on your hard drive click the top-right corner, choose “Search,” and type “Disk Defragmenter.” Doing so will speed up a system scan.

Cookies and Temporary Internet Files:

Microsoft is aware of a problem that makes Windows Defender scans take longer than usual and slows down a full system scan. This problem is caused by an abundance of temporary Internet files and cookies, the file types most likely to contain malware or spyware. To hasten the process, open your web browsers and erase any temporary files and cookies before performing a comprehensive scan.

Fix Scan problems:

We advise using DriverFix to resolve a variety of PC issues:

By keeping your drivers current, this computer software will protect you against hardware failure and common computer issues. Check your drivers right now in only 3 simple steps:

  • Download DriverFix first (verified download file).
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Fix Scan problems

It appears that Windows Defender will start experiencing freezing issues or will fail to launch correctly in Windows 10 after beginning to make a certain update to its database. Many customers who prefer the Windows Defender offline scan have voiced their complaints about the tool’s inability to function.

When you attempt to perform a full or custom scan on all of your hard drives, the error notice typically pops up and says Windows Defender was unable to scan your computer.

The error message 0x800106ba is displayed once this program’s service has terminated. Users reported various odd behaviors related to this functionality, all of which were comparable. So let’s look more closely.

When does this issue occur and what can I expect?

  • All scan kinds may be impacted (Not only is Windows Defender’s full scan stalled, but Windows’s quick scan isn’t working either, and Defender’s offline scan won’t launch or restart, either.)
  • Why The estimated time left for a comprehensive scan with Windows Defender continues growing (Users also reported problems with Windows Defender full scans that ended before they were finished or that just crashed.)
  • Additional problems with the offline option (Windows Defender offline scan stops at 92 or it is taking too long)
  • Ineffective Windows Defender custom scan
  • No results were found after a Windows Defender offline scan, 0 files were scanned, or the latest scan was unavailable.
  • Affects more recent OS versions as well (Windows Defender offline scan not working Windows 11)
  • Windows Defender only restarts after an offline scan
  • The Windows Defender scan in Safe Mode does not function

Therefore, in the following tutorial, we will perform a settings restoration step to a time when Windows Defender was working properly. We will also do a few more system tests to confirm that the issue is with Windows Defender but not the operating system itself.

Be aware that problems with the tool have been documented for the offline scan since a few years ago. Many users, however, continued to use it up until several Windows updates had an impact on its functionality.

Use Command Prompt:

  1. Open Command Prompt with administrative rights.
  2. You must type the upcoming command into the Command Prompt:

C:\ProgramFiles\WindowsDefender\MpCmdRun.Exe–remove definitions

  1. Enter will now execute the command.
  2. After the command has been carried out, quit Command Prompt and reboot your computer.

Remember that you shouldn’t run the Windows Defender update again, which is a crucial point. If you want to upgrade to the Windows Defender program, be sure to see if Microsoft has already addressed this problem. Here’s what you need to do if Windows Defender won’t turn on at all on Windows 10.

Use a third-party antivirus:

Consider switching to a different antivirus program if Windows Defender can still not resolve the issue. While Windows Defender is a useful and cost-free tool, there are alternative antivirus programs that are more dependable and offer more capabilities.

In light of this, we suggest using ESET Internet Security as a cost-effective, portable, and effective option. ESET is a well-known name in the online security sector, so you’ve probably heard of them.

Thanks to recent enhancements, its solutions are now even more effective. ESET Internet Security provides capabilities to protect against ransomware and spyware attacks when browsing the web and conducting online banking.

  • Purchase ESET Internet Security
  • Put in the most recent updates.
  • Launch the Settings app, then select the Update & security tab.
  • To proceed, press the Check for Updates button.

Windows will look for available updates and begin downloading them. Check whether the issue still exists after installing the most recent updates. You will be shown exactly what to do by using these approaches to fix Windows Defender in the Windows 10 operating system. To proceed, press the Check for Updates button.

How can I fix Windows Defender scanning problems?

Recreate the Recovery Partitions:

This solution ought to work when the Windows Defender offline scan is stalled or won’t even begin. Users frequently undertake a clean install followed by the deletion of the recovery partitions. Windows Defender ceases to function as a result.

How can I fix Windows Defender scanning problems

Therefore, you should try to install Windows with an in-place upgrade fix that will recreate the destroyed partition. The Media Creation Tool or the Windows 10 ISO files can be used to execute the operation. After copying Windows 10 to a portable media, the impacted device can then be used. After then, you’ll probably need to install some updates.


In summary how long does windows defender full scan take? you can speed up a scan by clearing temporary (junk) files first, temporarily disabling any other real-time protection software, closing all open programs, running a Quick Scan rather than a Full Scan, and not using the computer while the scan is running.

Frequently Asked Questions

Why is my Windows Defender scan taking so long?

Examines Windows Defender the thorough, complete scan length depends on how many files and folders are on your computer. Generally speaking, the scan will take longer to complete the more files you have. While running a scan, you can use your computer, but doing so will make it take longer.

Why is my full scan taking so long?

A Full Scan is significantly more thorough and can take a while because it examines every folder and file on the hard drive, which can contain thousands of them. This type of scan is so thorough that it might take many hours; therefore, the time required to complete it varies.

How often should I run a full scan on my computer?

Make sure your program runs a complete scan once each week. Additionally, you can perform a manual “quick” scan at any time. However, this is typically only required if your computer is acting suspiciously.

Can Windows Defender remove Trojan?

The Windows 10 update includes Windows Defender, which offers superior antimalware security to safeguard your device and data. However, not all viruses, malware, trojans, and other security threats can be handled by Windows Defender.

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