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H4X0R46
7 years agoNew Contributor
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?
- 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. 
61 Replies
- Hiddenbonus6 years agoNew MemberAfter 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: 
- woowoowoo6 years agoNew ContributorThat workaround did not work for me. 
- carlossgv6 years agoNew ContributorI 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.
- carlossgv6 years agoNew ContributorI 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. 
- woowoowoo6 years agoNew ContributorCo-worker and I have the exact same story. Installing Hamachi caps our speed at about 100mpbs. Uninstalling it does not fix anything. If we do a complete OS reset, it goes back to normal. Install Hamachi again and it gets capped. 
 LogMeIn support provided no assistance and said it wasn't their software when clearly it is.
- ryoma6 years agoNew ContributorThat's weird. In my case, the steam origin had a normal down speed. 
 I've only experienced a slowdown in megacloud.
 At this time, the only way to fix it is to restore the OS on Windows 10 itself. Sad news
 If you only need to delete games and settings apps Try using a recovery method that only reinstalls os
 It will not delete video files and portable file And it will tell you which apps you kindly deleted on your create htlml remove app desktop So just watch and reinstall the apps you deleted I think this is the only way I can tell you.
- ryoma6 years agoNew ContributorIf 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.
- ryoma6 years agoNew ContributorYeah 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 answerThen 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
- H4X0R466 years agoNew ContributorOh 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.
- ryoma6 years agoNew Contributoromg 
 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 :(