Windows Defender and Malwarebytes for windows 10

I have been unable to run a windows defender scan since 1/4/2018. I noticed there was an update on 1/8/2018. Is there away to re-install or repair windows defender without fresh install. I tried to download and install windows defender but was told a copy already exists.

I have Malwarebytes Pro antimalware installed and have never had an issue with it interfering with windows defender before.

Thanks,

Bob

[Original Title: Windows Defender for windows 10]

 

Question Info


Last updated July 23, 2019 Views 9,165 Applies to:
If you have another real-time Anti-Malware product, Windows Defender won't be run. So if you want to use Windows Defender, you have to completely remove Malwarebytes.

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From the first day I owned this computer, with windows 8 OS, to today when I have upgrade to windows 10 OS I have been able to run both windows defender and Malwarebytes together with no issues. That is until sometime after January 4, 2018 and the update from Microsoft.

And I believe Microsoft even updated windows defender in 2016 to allow another antivirus/antimalware program to run simultaneously.

I have real-time protection turned on for both program but I don't run automatic scans. I try to run a Malwarebytes antimalware full scan daily because it runs so much faster than windows defender quick scan. If necessary I would run a quick scan with windows defender but not since January 4th.

Thanks for your response though,

Bob

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If you have Malwarebytes scanner (not real time Anti-Malware), it is fine and could run along with Windows Defender. But Malwarebytes real-time Anti-Malware and Windows Defender might have conflict. If you have been running them alongside without any issue, the issue might have been hidden or not serious. It is not recommended to run more than one real-time Anti-Malware product. You should only chose to use one of them.

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Do you have Malwarebytes configured for compatibility with Windows Defender?

https://support.malwarebytes.com/docs/DOC-1149

If you continue to have problems with Defender scans, then you might want to apply the 3 strikes and you’re out troubleshooter. This troubleshooter was actually developed for the issue of excessive CPU utilization by the Antimalware Engine – but it can be applied to other persistent issues as well: 

1. Remove any undetected malware by scanning with several third-party malware-removal apps:

https://answers.microsoft.com/en-us/protect/forum/protect_other-protect_scanning-windows_other/list-of-malware-removal-tools/d824b9af-ebd8-4c47-94e2-8ee6c544c100

2. Remove any antimalware remnants by running the cleanup utilities for any preinstalled or previously installed AV apps:

https://answers.microsoft.com/en-us/protect/forum/protect_other-protect_start-windows_other/list-of-anti-malware-product-removal-tools/2bcb53f7-7ab4-4ef9-ab3a-6aebfa322f75

3. Run the standard Windows 10 system integrity checks:

https://answers.microsoft.com/en-us/windows/forum/windows_10-update/system-file-check-sfc-scan-and-repair-system-files/bc609315-da1f-4775-812c-695b60477a93

If that doesn’t resolve the issue, then consider switching to another free AV app:

https://answers.microsoft.com/en-us/protect/forum/protect_defender-protect_scanning-windows_10/how-to-stop-antimalware-service-executable-from/a3a57d31-4687-43c0-b274-261da7d89245

GreginMich

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