In some cases when you try to upgrade Skype from an earlier version to a newer version you may get the error message: "The Older version of Skype cannot be removed. Please contact your technical Support Group".
The error 1603 occurs during the process of uninstallation of the previous Skype version in case Skype is not able to find the cached PluginManager.msi file on your system.
First solution:
* Download and install Windows Installer CleanUp Utility from Microsoft site.
* Run the utility and remove "Skype Plugin Manager"
* Delete Skype\Plugin Manager folder manually. It is usually under folder C:\Program Files\Skype
* Install Skype 3.5.
Second Solution:
* Download the archive from:https://developer.sk...staller_fix.zip
* Unpack it to some folder. Make sure PluginManager.msi is located in same folder as fix.bat
* Run fix.bat Wait until the process is finished before proceeding
* Download version 3.5 and install it.
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