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BigFish7
BigFish7
New Member
September 17, 2025
Solved

FortiEDR - 5.2.8 - File Server Slowness

  • September 17, 2025
  • 8 replies
  • 1996 views

We have multiple users reporting extreme slowness when opening files from a file server. This seems to have started when we upgraded FortiEDR to 5.2.8.41 last Wednesday. We were also upgraded to 7.2 backend this Sunday.

 

I ran some tests on my machine to rule out the network. With FortiEDR enabled on both my machine and the file server a 13 MB .pdf takes 10 seconds to open. When disabling FortiEDR on my (client) machine the time to open is only a second. We see similar behavior on other machines/file servers.

 

Anyone having similar issues?

    Best answer by Luke_FTNT

    Hi @nicolet ,

    When you upgraded those Collectors to version 5.2.8.0044, did you speak to Fortinet TAC? This build of Collector includes a feature toggle which can mitigate performance issues relating to network file transfers. If you have not done so already, I recommend opening a ticket and our global teams will be happy to help you :)

    Cheers,

    -Luke

    8 replies

    Anthony_E
    Staff
    Anthony_E
    Staff
    September 22, 2025

    Hello,


    Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.


    Thanks,

    Best Regards
    Anthony_E
    Staff
    Anthony_E
    Staff
    September 24, 2025

    Hello,

     

    We are still looking for someone to help you.

    We will come back to you ASAP.


    Thanks,

    Best Regards
    Anthony_E
    Staff
    Anthony_E
    Staff
    September 29, 2025

    Hello,

     

    May I invite you to open a ticket with our TAC?:https://support.fortinet.com/welcome/

     

    Regards,

    Best Regards
    Luke_FTNT
    Staff
    Luke_FTNT
    Staff
    October 3, 2025

    Hello,

    This matter is a new known issue and Fortinet have a one-off hotfix available. Please open a support ticket at https://support.fortinet.com and our team will be happy to help.

    Cheers,

    -Luke

    masondon74
    masondon74
    Visitor III
    October 30, 2025

    Hey @BigFish7 did you get this resolved? We're seeing some network copy slowness after updating from 5.2.6.65 to 5.2.8.41. We're also seeing users with downloaded PDF and Excel files after the update.

    Luke_FTNT
    Staff
    Luke_FTNT
    Staff
    October 30, 2025

    Hi @masondon74 ,

    We have a hotfix released in Collector 5.2.8.0044 (plus an additional improvement which can be toggled upon request in edge cases). Please open a support ticket when convenient and our global teams will be happy to help.

     

    Cheers,

    -Luke

      nicolet
      nicolet
      New Member
      November 19, 2025

      We have 5.2.8.0044 but are experiencing this exact same issue these past couple of weeks. Anyone else seeing this? 

       

        Luke_FTNT
        Staff
        Luke_FTNTAnswer
        Staff
        November 19, 2025

        Hi @nicolet ,

        When you upgraded those Collectors to version 5.2.8.0044, did you speak to Fortinet TAC? This build of Collector includes a feature toggle which can mitigate performance issues relating to network file transfers. If you have not done so already, I recommend opening a ticket and our global teams will be happy to help you :)

        Cheers,

        -Luke

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