How to fix Error «Windows Installer package…» when trying to remove a program
The following error appeared on the client’s computer when we tried to remove lousy program Pro PC Cleaner: Error»Windows Installer package. Unable to start required to complete the installation DLL. Contact technical personnel or package vendor».
The error probably appeared because of damage to the setup. For this reason, we reinstalled the program and then tried again to uninstall using the «Programs and features». But in the course of removing the error appeared again. After some tests we finally found a way to work around this problem.
If you get this error message when trying to remove a program, the simple guide below should help you. However, the tool that we will use, can help and in that case, if the Error «Windows Installer package…» occurs during software installation.
Step 1: Go to the following link: https://support.microsoft.com/ru-ru/mats/program_install_and_uninstall
Step 2: Click on «Start now» button to download the tool «Tool to troubleshoot problems with the installation and removal of programs».
Step 3: Run the program and wait for the boot process.
Step 4: Accept the license agreement.
Step 5: On the next screen, select «Detect problems and to install updates (recommended)».
Step 6: Select «Install» or «Uninstall» depending on your problem. That is, if the Error «Windows Installer package…» message appears when you try to install the program, then you need to choose the first option and, respectively, second, if you can’t remove the program. We will choose «Uninstall».
Step 7: Wait until the program completes the process of identifying problems, and then select the program you want to remove, and then click Next.
Step 8: Click «Yes, try uninstall».
Step 9: In the «Troubleshooting is complete», where you will see the status «Resolved», click «Next».
Step 10: In the final window, select «Yes, the problem is resolved». Click «Next» and close the window.
Step 11: Finally, open «Programs and features» and verify that the program is no longer in the list of installed programs. If it is still there in the list, select it and press «Uninstall/Change». This time, the uninstall process should complete without errors.