slow ethernet network speed in Windows after upgrade Parallels 17 to 18

Discussion in 'Installation and Configuration' started by BerchtoldP, Aug 12, 2022.

  1. BerchtoldP

    BerchtoldP Bit Poster

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    I just upgrade my Parallels 17 to 18 and had very slow ethernet network after upgrading.
    i made no changes in the network settings, and i checked if the upgrade was making changes to the previous settings,
    but found none.
    i used bridged network (ethernet) settings with static ip configured in my windows installation,
    and that worked fine for me with Parallels 17.
    Is there anyone who had the same problems and find a solution for that?
     
  2. Mark Fine

    Mark Fine Kilo Poster

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    479
    No solution, but you're experiencing something that I already suspected was happening.
     
  3. Nazeemabanu@Parallels

    Nazeemabanu@Parallels Staff Member

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  4. Michael Grote

    Michael Grote

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    I have the same problem. I was so happy that with the update to 18 the USB audio problem was fixed after months (!) and now this error. Windows bandwidth is 2 mbit/s, macOS 95 mbit/s. I can no longer use this unreliable product for my work.
     
    JARVIS1187 likes this.
  5. JARVIS1187

    JARVIS1187 Bit Poster

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    No solution either, but I am experiencing the same problem on all my Win-VMs.
    I tried:
    - fresh VMs and it makes no difference if I use a Windows. Other OS's are NOT affected in any way by that problem.
    - changing and testing with all network adapters and network types (shared, host only, bridged)
    - since it was already suggested to reinstall Parallels Tools, I tried that, too!
     
  6. halberstadt

    halberstadt Bit Poster

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    49
    I upgraded from 17 to 18 today and first noticed very slow network speed in my Unbutu VM. Now, both Unbutu and my Win 11 VM have lost all network connectivity. I am using "Shared Network". MacBook Pro running Monterey 12.5.
    Slow was bad; no network connection is a disaster.
     
  7. halberstadt

    halberstadt Bit Poster

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    Edit: "Ubuntu" of course, not Unbutu.
     
  8. StefanG19

    StefanG19 Bit Poster

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    Same here after upgrade. Host: MacOS 10.15.7 (intel iMac), Guest: Ubuntu 20.04. Parallels 18 Desktop Pro Edition
    Speed/Ping tests are OK, but the initial connection seem to take much longer than before. For eample: starting Firefox in the VM: it takes around 7 seconds to load the home website. Once the website is loaded it seems to be OK
     
  9. halberstadt

    halberstadt Bit Poster

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    49
    After some tinkering, my Win 11 VM has network connectivity. Ubuntu network is still dead. The upgrade to Parallels 18 was at the same time as an upgrade to the latest Ubuntu release. My problem no longer applies to this thread (Windows).
     
  10. JARVIS1187

    JARVIS1187 Bit Poster

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    I may have found a SIMPLE solution - dumb me did not check that before.
    Open your VM settings, goto "hardware" and select the network device. Then just check the "Network conditioner" checkbox, leave the profile on "user defined" and if you click the "configure"-button, the upload and download bandwidth should be set to "unlimited".
    That fixed the bug for me in all my Windows VMs, I can finally work with them again.

    Should look like in my 2 images - just maybe in your set language :)
     

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  11. Mark Fine

    Mark Fine Kilo Poster

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    Amazing. I've used Parallels since version 3 and have never had that feature set. Thank you.
     
  12. fast-tl

    fast-tl Bit Poster

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    I had to turn on Network Conditioner and choose Custom profile. Then I set Inbound and Outbound bandwidth to unlimited. That corrected my VM internet speed from 1Mbps to the same throughput as the native Mac side.
     

    Attached Files:

    JeffA7 likes this.
  13. Toby3

    Toby3

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    Nazeemabanu@Parallels likes this.
  14. JARVIS1187

    JARVIS1187 Bit Poster

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    Just for anyone joining that thread now:
    As far as I noticed yesterday, that bug is still present in the newest version.
     
  15. MichaelC36

    MichaelC36 Bit Poster

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    Yes, the bug is still present in the newest/current version 18.0.2.
     

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