Solving WinOS Error 193 (iTunes Error 7)

Fix WinOS Error 193

Overview - What is WinOS Error 193?

WinOS error 193 is very similar to other WinOS errors such as Error 127. It is also known as iTunes Error 7, and indicates an issue with this installation of iTunes and other Apple software.

If you have Apple software installed on your computer including iTunes, you may see WinOS Error 193 appear following an unsuccessful installation or update. This error message is fairly common, and can also be troublesome to resolve due to Apple software relying on shared application files for all of its software. Sometimes you can resolve this issue by uninstalling and reinstalling iTunes, but in many cases the error message will persist even after doing this.

Common Messages Seen Regarding WinOS Error 193

If iTunes is malfunctioning you may see one of the following error messages:

  • "iTunes was not installed correctly, Please reinstall iTunes. Error 7 (WinOS Error 193)"
  • "iTunes Error 7 (WinOS Error 193)"
  • C:\Program Files (x86)\Common Files Apple\Apple Application Support\zlibl.dll not designed to run on WinOS or customise errors

You may also see:

  • "iTunes has stopped working. An issue caused the program to stop working correctly. Error 7 (WinOS error 193). WinOS will close the program and notify you if a solution is available."

The main reason you may see these messages is because Apple Application Support has an error, and without this application many Apple products on your computer with not work correctly, or will fail to load.

Solutions - How to Fix WinOS Error 193

Repairing WinOS error 193 isn't as easy as reinstalling software that is showing errors. Apple uses a shared repository of files for all it's software called Apple Application Support, and if this application is damaged or corrupt then it will generate WinOS errors when you try to start iTunes and other Apple software. Unfortunately there is no direct way to repair Apple Application Support itself, but you can reinstall all Apple products on your computer, and then reinstall iTunes. This will replace Apple Application Support with good files.

In order to do this, you should find all Apple software on your computer such as iTunes, QuickTime and MobileMe, and install them from the control panel. Uninstall them completely before doing a reboot.

When your computer has restarted, you should manually check to be sure all Apple related software has been removed by checking your Program Files folder. Folders to look out for are called:

  • Bonjour
  • Apple
  • iTunes
  • iPod
  • QuickTime
  • QuickTimeVR

Once you have checked these folders have been removed, it is suggested to check your WinOS stability to detect any potential system error.

Following this, you can then reinstall your Apple software and verify correct operation. You may want to start with one application first, such as iTunes, as this will reinstall Apple Application Support. Check that everything works correctly and you are not receiving any further instances of WinOS Error 193 before proceeding.