Windows Defender exclusions for Studio

I currently have the following folders excluded in Windows Defender:

C:\Program Files (x86)\Common Files\SDL

C:\Program Files (x86)\SDL

I thought that excluding these folders would prevent Windows Defender from monitoring Studio, but the MsMpEng.exe process jumps to around 5% to 10% of my CPU when I do heavy processing in Studio. (Otherwise, it is generally around 0%.)

Have I missed something?

Regards,
Bruce Campbell
ASAP Language Services

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  • Hi Paul,

    Interestingly enough, excluding files and folders does not work as I had expected.

    While I was playing around with the exclusions, I noticed that Defender was mainly focusing on the Telemetrics service. If I turned the service off, MsMpEng.exe used far less CPU.

    I found a discussion on the Internet about Defender chewing up CPU because a program was accessing a large number of log files. It appears that this is by design, as Defender has to determine whether the files should be scanned or not -- even though it ends up not scanning them. Excluding the program as a process was suggested.

    Perhaps the SDL Telemetrics service does something similar.

    Anyway, I specifically excluded the Studio program and SDL Telemetrics service as *processes* (including the complete path to the files), and the MsMpEng.exe process now uses 0% CPU.

    Live and learn...

    Best regards,
    Bruce Campbell
    ASAP Language Services

  • I just looked at the Telemetrics program in the Resource Monitor and it definitely opens a large number of files (sdltrack-journal?). It is also responsible for almost all of the disk activity when I do a file analysis.

    By the way, the Telemetrics program itself uses 5% to 10% of my CPU when I run a file analysis.

    Thankfully it does not slow down Studio, as an analysis done with the service off took just as long as an analysis with the service on.

    Regards,
    Bruce Campbell
    ASAP Language Services