Installing Skype Failed: code 1638
This happens when a skype uninstallation was unsuccessful, there are some registry files left that is preventing skype from updating or reinstalling. You will not be able to find skype on the list of your programs, so there wouldn't be an option to uninstall it.
- Download Skype msi installer on this link
- Once downloaded, right click on the file and click “Install”
- Skype will now start installing and overwrite the corrupted registry files.