If you meet some abnormal problem with uninstalling or upgrading Foxit Software, doing a clean uninstallation of the current Foxit PDF Editor may resolve it.
1. Download the Foxit clean installation tool from this link.
2. Follow the readMe.txt file in this zip file to get started. Note to run it as the administrator and uninstall this tool after uninstalling the Foxit PDF Editor.
3. (Optional) You may also want to go with the command line option to do the uninstallation. Below is the script which uninstalls the current Foxit PDF Editor and then uninstalls the tool.
msiexec /i ClearInstallation_FoxitPDFEditor.msi DEL_FILES="1"
msiexec /uninstall ClearInstallation_FoxitPDFEditor.msi /quiet