Windows 10: Update KB4559309 Makes Computer Unbearably Slow

Discus and support Update KB4559309 Makes Computer Unbearably Slow in Windows 10 Installation and Upgrade to solve the problem; Last night I updated my windows 10 pro using KB:4559309. Since then my computer performance has absolutely tanked. my startup time is probably triple,... Discussion in 'Windows 10 Installation and Upgrade' started by PaulWaite1, Jun 16, 2020.

  1. Update KB4559309 Makes Computer Unbearably Slow


    Last night I updated my windows 10 pro using KB:4559309. Since then my computer performance has absolutely tanked. my startup time is probably triple, loading any window has a few second delay.


    I attempted to uninstall the update however windows tells me that it is required and cannot be removed.


    This update has essentially rendered my brand new computer useless.


    Please help!

    :)
     
    PaulWaite1, Jun 16, 2020
    #1
  2. dalchina Win User

    Computer UNBEARABLY SLOW After Anniversary Update

    2. Download and install Crystal Diskinfo and run it.
    Please post a screenshot like this (or more of its window if you wish)

    Update KB4559309 Makes Computer Unbearably Slow [​IMG]


    Let's try just this please.
     
    dalchina, Jun 16, 2020
    #2
  3. JOSHSKORN Win User
    Computer UNBEARABLY SLOW After Anniversary Update

    My computer is unbearably slow after the Anniversary Update. Tried everything I can think of, which is basically CCleaner and SFC /SCANNOW. Nothing has seemed to work. What should I do?

    My version of Windows 10 x64 is a free upgrade from Windows 7, if that means anything at all.

    I don't really see a point in using System Restore, I could be wrong, since System Restore might had taken me to a point before the Anniversary Update.
     
    JOSHSKORN, Jun 16, 2020
    #3
  4. Mayra Aqu Win User

    Update KB4559309 Makes Computer Unbearably Slow

    Updates slowing computer performance

    Hi,

    Listed below are possible causes why Windows is running slow:

    • Too many application installed.
    • Virus and malware.
    • Corrupted system files.
    • Outdated drivers.

    For us to assist you with the concern, we suggest following the steps on this
    article
    .

    Update us with the outcome so we can provide further assistance.
     
    Mayra Aqu, Jun 16, 2020
    #4
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Update KB4559309 Makes Computer Unbearably Slow

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