Forum Discussion

H4X0R46's avatar
H4X0R46
New Contributor
5 years ago

Slow internet speeds after installing Hamachi

I've been having this issue for so long now! For some reason, my internet is blazing fast until I install Hamachi. Certain website downloads are affected but others aren't. for instance, downloading a zip file from "downloads.oneplus.com" WITHOUT Hamachi shows 3 minutes left. AFTER installing Hamachi, that same file now says 20 Minutes.... Same issue happens with Microsoft's download servers, when trying to download the Windows 10 iso, Hamachi just DESTROYS the download speed when my internet is more than capable of downloading large files quickly!

 

Even uninstalling Hamachi leaves the same affect, almost like there's something left in the system that causes this, registry data maybe? Any pointers?

Problem
  • oyvindhauge's avatar
    oyvindhauge
    5 years ago

    Try this to check the status of Receive Window Auto-Tuning Level

    netsh interface tcp show global

    and if it is disabled, turn it on with

    netsh interface tcp set global autotuninglevel=normal

    This helped me and two mates. The settings need to be run with admin rights cmd  (and shift+ctrl when you run it).

    As far as we understand it you would most likely want Receive-Side Scaling State enabled as well.

    netsh interface tcp set global rss=enabled

    We have not tested Hamachi after changing these settings. Nevertheless, just wanted to share because this problem was making us crazy.

  • v4n's avatar
    v4n
    New Member
    3 years ago

    very late reply, but this is how to fix it:

    1. uninstall hamachi using the uninstaller that it has.
    2. press Win + R and something should pop up on the bottom left of your screen

    3. type in ctfmon.exe and hit enter.
    4. restart your computer and redo step 2 and it will be fixed.

  • acid78's avatar
    acid78
    Visitor
    3 years ago
     
    Hello
I installed Hamachi on both of my PCs ( both Win10).
Unfortunately I now have the problem that my upload speed is very slow.
Normally I have 50mbit upload but after installation I only have 3-5mbit upload.
The effect happened right after installation.
Nothing else was changed in the system.

What can I do ???
  • peatprey's avatar
    peatprey
    Visitor
    4 years ago

    Removing the program and restarting does not help. But when I wrote thats in the command line, this all became normal. The speed is returned to the original 9-10 MB.  

     

    netsh int tcp set global autotuninglevel = normal 

    netsh int tcp set global rss = enabled 

     

    I didn't notice this before. Please fix

     

  • Keano16's avatar
    Keano16
    New Member
    4 years ago

    Hello,

     

    I have two offices at different locations and I use Hamachi to share network between them. Both of this offices have pretty good internet connection 100/100 FTTH. Unfortunately transfer speeds using Windows explorer are not more than 900 Kb/s. Connection is green - "direct tunnel".

     

    What could we do about that?

     

    Thank you!

     

     

  • GazCBG's avatar
    GazCBG
    New Member
    4 years ago

    Hi,

     

    I tried out Hamachi and noticed it slows down my internet, even when not connected.

    I found the fix, for this which sorted out my download speeds, but would like to know:

     

    Is it a 1 time fix or do I need to keep doing it?

     

    Thanks

  • hanamura's avatar
    hanamura
    New Member
    5 years ago

    I setup hamachi as discussed here . The objective was  to router all traffic from computer B through computer A.

     

    This works, but the internet is very slow and I mean dialup slow. I get 'waiting for tunnel' for at-least 10 seconds after which website loads slowly. 

     

    I have 100mbps connection, so its not my connection speed.

    • AshC's avatar
      AshC
      Retired GoTo Contributor
      5 years ago

      Hi hanamura

      If you have a paid Hamachi subscription there should be no connection delays.  This is only a restriction of the Free version.

  • Hiddenbonus's avatar
    Hiddenbonus
    New Member
    5 years ago

    After installing hamachi my internet speed has become much slower. My speeds used to be 200Mbps on download and 20Mbps on upload and now they are 20Mbps download and 8Mbps upload even after uninstalling hamachi the same problem persists. This problem has been ongoing ever since I downloaded hamachi. Help is greatly appreciated :smileysad:

  • ryoma's avatar
    ryoma
    New Contributor
    5 years ago

    omg
    It's exactly the same problem as me
    I've been struggling for months now and I'm sad that there's still no solution.
    As you said, only OS reinstall is the solution :(

    • H4X0R46's avatar
      H4X0R46
      New Contributor
      5 years ago
      Oh yeah it's a REAL BUMMER having to reinstall your entire OS over a single app, but it was the only thing that worked for me. I have no clue why Hamachi slows your speeds like it does, but it somehow needs a clean install of the OS to reverse? Bummer for sure.
      • ryoma's avatar
        ryoma
        New Contributor
        5 years ago

        Yeah Unfortunately, the only way to do this was to reinstall the OS. I'm very tired of this
        I tried everything I know It all failed 
        I'm tired of fighting this problem anymore.
        The mega support team Say:We do not know how Hamachi works, so we cannot advise you, so could not help.
        The only solution to this problem seems to be the Hamachi Support Team. It looks difficult too
        I've been struggling with this for months. I have already written about this, but there is no answer

        Then I saw your writing I feel as you say This problem won't be solved right away.
        The RADMIN VPN you recommended works well without any problems Thanks for the recommendation
        I feel like there's a registry involved... but I'm tired of trying it out :smileysad:
        What's the matter now? I'm not going to use it. Thank you for your reply and have a nice day

  • Cykr1L's avatar
    Cykr1L
    Active Contributor
    5 years ago

    got the same problem here ... after installingy hamachi i`ve got slow downloads on HTTP and on steam, origin and so on ... uninstalling hamachi doesn`t fix it ... need some help

     

    i`ve testet jdownloader and if i download something 10 files with 20 downloads chucks at the same time i got mei 1 gigabit speed ... but this is the only way

    • H4X0R46's avatar
      H4X0R46
      New Contributor
      5 years ago
      So I'm not the only one! Yeah I tried EVERYTHING to get my speeds back, I finally got frustrated and reinstalled Windows on my PC, and found an alternative for Hamachi. I will never use Hamachi again because of this issue that was only fixed by a clean OS install. Not sure if I'm allowed to mention what I use now, so message me if you're curious :)
      • Cykr1L's avatar
        Cykr1L
        Active Contributor
        5 years ago
        What alternative did you take?
        So... I guess I have to kill my system too 😑
  • Sjaco's avatar
    Sjaco
    New Contributor
    5 years ago

    Before installing Hamachi my internet speeds are showing 200Mb/s. After installing it I constantly get 60Mb/s. I have uninstalled Hamachi but nothing changes, is there a setting somewhere that can resolve this?

    • carlossgv's avatar
      carlossgv
      New Contributor
      5 years ago

      I found a way to keep Hamachi and maintain your internet speed while you are not using it. 

       

      Go to Services (Windows Search Bar: services.msc) and look up for LogMeIn Hamachi Tunneling Engine, disable it and restart the computer. It worked for me, if I need to use Hamachi again I'll enable it just for the time being. This way at least you won't have to format the OS.

       

      Hope it helps! Is not the ultimate solution but it works.

    • ryoma's avatar
      ryoma
      New Contributor
      5 years ago

      If you want to save some files You can only use Windows OS to initialize it.  Keep the file but delete only the settings and os app.  https://ckghwn.tistory.com/629 It's difficult because it's in Korean You can tell it roughly by explaining it with an image.  I initialized os and saved the file through this method
      Kindly, you will have an html called Removed App on your desktop. It's easy to reinstall while looking at it
      If you have a graphics card driver, use a DDU It is recommended to remove and reinstall
      See the link https://community.logmein.com/t5/LogMeIn-Hamachi-Discussions/Slow-downloads-after-installing-Hamachi/m-p/213095#M18101 for another alternative.

    • Sjaco's avatar
      Sjaco
      New Contributor
      5 years ago

      My system specs, I meant to put this in the original post.

       

      Windows 10 latest patches

      i7 4790k @ stock

      16GB DDR3

      1TB NVMe drive

       

      My internet is 200Mb/s but after installing Hamachi it falls to 60Mb/s

      • Sjaco's avatar
        Sjaco
        New Contributor
        5 years ago

        I just did a test on a Windows 10 VM and when I installed Hamachi the VM went from 200Mb/s to 60Mb/s could this be a setting somewhere or a bug?