Windows 10: High Windows Defender CPU usage while browsing with Firefox

Discus and support High Windows Defender CPU usage while browsing with Firefox in AntiVirus, Firewalls and System Security to solve the problem; Antimalware Process hovers around 30% while opening any webpage in Firefox. No issue with Edge.... Discussion in 'AntiVirus, Firewalls and System Security' started by Karam Lamba, Jan 25, 2023.

  1. KARAM LAMBA
    Karam Lamba Win User

    High Windows Defender CPU usage while browsing with Firefox


    Antimalware Process hovers around 30% while opening any webpage in Firefox. No issue with Edge.

    :)
     
    Karam Lamba, Jan 25, 2023
    #1
  2. ROBELENE WIN
    Robelene Win Win User

    High CPU usage Microsoft Edge on video Streaming

    Hi Sibtain,

    Let's try to isolate the cause of this issue with the high CPU usage in Edge. We suggest that you clear your browsing data. Clearing your browsing data will help improve the performance of Edge. To clear, kindly follow the steps below:

    • Open Edge.
    • Click on the three dots icon on the upper-right part of the screen.
    • Click Settings.
    • Under Clear browsing data, click on Choose what to clear.
    • Click on Clear.

    You can also visit this link with a similar concern as yours and check the solution
    provided by Josette Sal.

    Let us know if you have any other questions.
     
    Robelene Win, Jan 25, 2023
    #2
  3. STEVENS79
    Stevens79 Win User
    High CPU and memory usage on Windows 10 with Microsoft Edge.

    Wow, this reply really nailed it. For both Edge and Firefox, I monitored the CPU usage and picked a process with high CPU usage. I killed 1 process per app and the CPU went down to under an average of 10%.

    One connection was Fox News (Firefox), but can't see which one was stopped in Edge.

    Great suggestion!
     
    Stevens79, Jan 25, 2023
    #3
  4. SONGOKU'SSON
    SonGoku'sSon Win User

    High Windows Defender CPU usage while browsing with Firefox

    VERY HIGH CPU USAGE

    Hey there Kristian, first I'd suggest using your task manager and seeing if Windows antimalware executable is going on, because it can spike high cpu usage rates. Afterwords, i'd like for you to do a scan with your windows defender, as it may be malware
    infecting your computer.
     
    SonGoku'sSon, Jan 25, 2023
    #4
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High Windows Defender CPU usage while browsing with Firefox

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