Problem installing Xamarin

I am trying to install Xamarin for Android, and I have some kind of problem, and I can not find any help anywhere. Even, I tried to start the installation as an administrator, but the same error persists:
This is the Error Part log file:

 [2013-04-10 23:20:27.396] [Info] Installing an MSI [2013-04-10 23:20:27.400] [Info] Database path: <USER_HOME>\Temp\Xamarin\downloads\mono-android-4.6.02001.msi [2013-04-10 23:20:27.404] [Info] Starting MSI installation: msiexec /i "<USER_HOME>\Temp\Xamarin\downloads\mono-android-4.6.02001.msi" /quiet /passive /log "<USER_HOME>\Temp\tmp76AB.tmp" ADDLOCAL=MonoDroidSDK,VisualStudioAddin,VisualStudio11Addin [2013-04-10 23:20:27.608] [Info] MSI installation process exited with code 1620 [2013-04-10 23:20:27.611] [Info] Status: failed. [2013-04-10 23:20:27.615] [Info] InstallMsi failed for '<USER_HOME>\Temp\Xamarin\downloads\mono-android-4.6.02001.msi' [2013-04-10 23:20:27.618] [Exception] Exception was thrown. [2013-04-10 23:20:27.618] [Exception] System.InvalidOperationException: MSI execution failed. [2013-04-10 23:20:27.618] [Exception] à Xamarin.Web.Installer.WindowsInstallationArchiveHandler.InstallMsi(String file, Boolean needsPrivileges) [2013-04-10 23:20:27.621] [Info] BEGIN >>>>>> msiexec log: '<USER_HOME>\Temp\tmp76AB.tmp' [2013-04-10 23:20:27.626] [Info] END >>>>>> msiexec log: '<USER_HOME>\Temp\tmp76AB.tmp' [2013-04-10 23:20:27.629] [Info] Status: failed. [2013-04-10 23:20:27.632] [Exception] Installation of software item 'Xamarin.Android for Visual Studio and Xamarin Studio' failed with exception. [2013-04-10 23:20:27.632] [Exception] Xamarin.Web.Installer.InstallException: Installation of archive '<USER_HOME>\Temp\Xamarin\downloads\mono-android-4.6.02001.msi' failed with exception. ---> System.InvalidOperationException: MSI execution failed. [2013-04-10 23:20:27.632] [Exception] à Xamarin.Web.Installer.WindowsInstallationArchiveHandler.InstallMsi(String file, Boolean needsPrivileges) [2013-04-10 23:20:27.632] [Exception] à Xamarin.Web.Installer.Installer.InstallationArchiveHandler.Install(String path, Boolean needsPrivileges) [2013-04-10 23:20:27.632] [Exception] --- Fin de la trace de la pile d'exception interne --- [2013-04-10 23:20:27.632] [Exception] à Xamarin.Web.Installer.Installer.InstallationArchiveHandler.Install(String path, Boolean needsPrivileges) [2013-04-10 23:20:27.632] [Exception] à Xamarin.Web.Installer.Installer.BaseSoftwareItem.Install(UInt32 tryNumber) [2013-04-10 23:20:27.632] [Exception] à WindowsInstaller.ProgressPage.InstallationWorker() [2013-04-10 23:20:27.635] [Info] Status: failed. [2013-04-10 23:20:27.638] [Debug] Starting installation complete task. [2013-04-10 23:20:27.641] [Info] Background installation worker completed. [2013-04-10 23:20:27.644] [Info] Installation completed with failure [2013-04-10 23:20:27.647] [Info] Status: failed. 
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3 answers

As Chlebta said; try downloading the file directly.

I updated the URL to the latest version: http://download.xamarin.com/MonoforAndroid/Windows/mono-android-4.8.00013.msi

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I had the same problem a second time.

Here are the steps that allow me to solve this problem:

  • Uninstall all Xamarin products (Xamarin Android, Xamarin Studio, etc.)
  • Go to the C: \ Program Files (x86) \ Microsoft Visual Studio 10.0 \ Common7 \ IDE \ Extensions folder and delete the Xamarin folder
  • Go to C: \ Program Files (x86) \ Microsoft Visual Studio 11.0 \ Common7 \ IDE \ Extensions and delete the Xamarin folder
  • Install Xamarin Studio or just mono-android-4.8.00013.msi as you need

Hope this helps (and hope the problem does not recur again).

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MSI was not complete: (7,627,523 bytes) vs (40,300,544 bytes) when downloading directly from the URI http://download.xamarin.com/studio/Windows/XamarinStudio-5.0.0.878-0.msi

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