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Wine is saying that Mono package is not installed, but I installed it with Terminal by:

sudo apt-get install mono-complete

What should I do?

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  • 2
    Wine needs the Windows build of Mono, which I think you can install using winetricks. I'm a bit hazy on the specifics -- maybe someone else can take this clue and flesh out a step-by-step answer.
    – Nick Weinberg
    Oct 26, 2016 at 2:53
  • yeah I need a step-by-step answer, thanks anyway
    – Steve
    Oct 26, 2016 at 2:56
  • 4
    Try looking at the official docs ... https://wiki.winehq.org/Mono
    – GrannySez
    Oct 26, 2016 at 3:51

5 Answers 5

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Do the following to install wine-mono:

  1. Download wine-mono.msi from the official WineHQ site.
  2. Type wine64 uninstaller.
  3. Press install from the uninstaller GUI and select the downloaded .msi package.
  4. Done!
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  • 83
    "Press install from the uninstaller" how intuitive
    – Alejandro Ramallo
    May 1, 2019 at 23:42
  • With $USER, get "There is no Windows program configured to open this type of file". From $ROOT, it does see mono runtimes (I did reload because I didnt see a response). wine KeePass.exe still not working, even with sudo. And after trying the other answers. "Wine Mono is not installed"
    – alchemy
    Apr 17, 2020 at 23:28
  • @AlejandroRamallo very well in the Windows idiom ;)
    – Matthieu
    Jun 27, 2022 at 16:22
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    I get the error "There is no Windows program configured to open this type of file"
    – LuisAFK
    Jul 7, 2022 at 17:31
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    Great answer, on headless machines like a CI, this doesn't work though. Using wine msiexec /i wine-mono-X.Y.Z-x86.msi however does. See my answer below for more details.
    – sebkur
    Jan 4 at 20:28
42

Installing .NET instead should work as well. For example by the following commands in a terminal:

sudo apt-get install winetricks
winetricks dotnet45
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    I don't think it worked; nothing showed up in wine uninstaller after above.
    – stucash
    Apr 26, 2019 at 17:07
  • didnt work for me either. didnt try rebooting.
    – alchemy
    Apr 17, 2020 at 23:19
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    I do not want to install wine-mono b/c of the wine howto here keepass2_wine But the howto does not work b/c of error: (base) leder@home-ryzen-desktop:~/Keepass2_portable$ wine KeePass.exe 0009:err:mscoree:CLRRuntimeInfo_GetRuntimeHost Wine Mono is not installed
    – Leder
    Feb 14, 2021 at 5:03
  • This works for me, thanks.
    – Yan King Yin
    Jul 23, 2022 at 22:36
  • Executing load_dotnet45 ------------------------------------------------------ warning: This package (dotnet45) is broken in wine-6.0.3. Broken since 5.18. See https://bugs.winehq.org/show_bug.cgi?id=49897 for more info. Use --force to try anyway. ------------------------------------------------------
    – Ricky Robinson
    Oct 12 at 8:30
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Other answers were not working for me on 18.04 LTS with winehq-stable package.

The workaround I found was to recreate wine32 and wine64 prefixes and install wine-mono on that with the automatic prompt.


    # Create dir for 32 bit prefix
    mkdir ~/.wine32
    # destroy default configuration (64 bit prefix)
    rm -rf ~/.wine 

    # Initial setup (create prefixes)
    WINEPREFIX="$HOME/.wine32" WINEARCH=win32 wine wineboot
    WINEPREFIX="$HOME/.wine" WINEARCH=win64 wine64 wineboot

    # To install dotnet35 on 32-bit prefix
    WINEPREFIX="$HOME/.wine32" WINEARCH=win32 winetricks dotnet35
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@PSN's answer worked for me, however I was in the situation of needing to do this from a script on a remote CI machine without a user interface available.

I suggest the following solution, which worked for me:

  1. Download wine-mono.msi from the official WineHQ site (version 7.4.0 at the time of writing this).
  2. Type wine msiexec /i wine-mono-7.4.0-x86.msi.
  3. Done!

It's also possible to verify on the command line that installing Mono worked:

$ wine uninstaller --list
{47A1FA26-B71E-5325-8161-20CF885181FF}|||Wine Mono Runtime
{7426CCE2-5341-534D-BAB0-1DAEDCCE76CE}|||Wine Mono Windows Support

Side note: it's also possible to run the installer using wine start wine-mono-7.4.0-x86.msi. While there's no graphical installer coming up for the Mono MSI on a local machine, it does not work like this on a headless machine. Fortunately wine msiexec /i wine-mono-7.4.0-x86.msi seems to work without a display though.

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You can easily download and configure with Synaptic Package Manager :

  • open Synaptic and search for msitools
  • mark for installation and click apply.
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  • 2
    nope, apt search mistools && sudo apt install !$ installed but still cant run KeePass
    – alchemy
    Apr 17, 2020 at 23:20

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