We are using the Install Shield 2021. We added a new feature to our software installer. The problem is in that our software can not be uninstall successfully . Most the application file still remains if it is upgraded from the old version except for the item in control panel. but if it is new install the uninstall procedure will work well. How to fix the problem?
If the issue only occurs after you have upgraded the application - then this would suggest that there may be problem with how the upgrade has been created in your project. Make sure you are following the correct steps to create the upgrade here:
