Jump to content


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.

Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.


Windows Defender wont start error 577

  • Please log in to reply
1 reply to this topic

#1 diggiedo


  • Members
  • 155 posts
  • Gender:Male
  • Local time:11:26 AM

Posted 07 November 2015 - 07:46 AM

Don't know what this is all about but any help would be great. ty in advance.

Edited by Queen-Evie, 07 November 2015 - 09:10 AM.
moved from Windows 10 Support to the appropriate forum

BC AdBot (Login to Remove)



#2 quietman7


    Bleepin' Janitor

  • Global Moderator
  • 50,745 posts
  • Gender:Male
  • Location:Virginia, USA
  • Local time:12:26 PM

Posted 07 November 2015 - 09:43 AM

These types of errors on Windows Defender 8/10 are typically the result of having a third-party anti-virus installed or failure to remove it properly (completely).

Windows 8/10 integrates a more robust version of Windows Defender[/url] (and uses that name) for its anti-virus and anti-malware protection.

Since Windows 8/10 Defender includes anti-virus protection, it typically is disabled by the installation of a third-party anti-virus program. If a trial anti-virus (i.e. McAfee, Norton, etc) came preinstalled on your computer or you installed one, it most likely turned Windows 8 Defender off (disabled) to avoid conflicts. Windows 8 Defender will remain disabled until that anti-virus software has been completely uninstalled. In some cases, you may need to download and run the anti-virus vendor's clean up tool to remove any remaining remnants.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users