Uninstall security update KB5009543 in Windows 10

kpackaging 1 Reputation point
2022-01-13T09:51:59.843+00:00

I am trying to delete the security update K5009543, because of the issues it causes with the VPN L2TP connections..

I tried uninstalled it from cmd (run as Administrator)

wusa /uninstall /kb:5009543

But the uninstall doesn't complete as it says the update is necessary. Is there any workaround?

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
10,613 questions
Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
2,272 questions
Windows 10 Security
Windows 10 Security
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Security: The precautions taken to guard against crime, attack, sabotage, espionage, or another threat.
2,753 questions

8 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Muhammad Talha 1 Reputation point
    2022-01-17T10:52:46.88+00:00

    Previously i was facing the issue while connecting to the vpn using windows 10 and i was getting the below error
    Solved: l2tp connection failed because the security layer how to resolve windows 10.

    This error i solved by uninstalling the Windows Update: KB5009543 and restart after this and after this i was able to connect to the VPN.

    Windows Update: KB5009543 This update was given to fix Japanese character issue in text editor and added some additional security level features in this fix.

    Furthermore to study this document can be helpful about this issue
    https://www.howto-connect.com/fix-vpn-kb5009543-windows-10/

    0 comments
  2. Jules Wilkinson 1 Reputation point
    2022-01-17T21:00:09.743+00:00

    Heya folks,
    Just stumbled across this and wanted to share -

    I've been battling with this for 5 hours - Uninstalling the KB didn't work. Neither did replacing the IKE DLL.

    Stumbled across an old memory related to Draytek VPN client not working.
    Go in to Device Manager, then, Network Adapters
    Uninstall 'WAN miniport (IP)'
    Then scan for hardware changes,
    It reinstalls - And seems to now work!
    (albeit with the KB still uninstalled)

    phew

    0 comments
  3. TRH_SF 1 Reputation point
    2022-01-23T23:10:47.1+00:00

    Folks,

    Is there a third-party alternative to MS VPN that would work?

    I have done everything so far mentioned in this discussion, plus installed MS patches. I still get the L2TP error...

    Thanks