How to unintall iSlide old version? July 08, 2019 09:43 Updated Follow Solution Control Panel > Programs, find iSlide Tools and click to uninstall it. Search "iSlide" in your computer, delete all the files. Re-install iSlide if needed. Related articles How can I install iSlide? iSlide add-in has been installed successfully, but it is not listed in the COM Add-ins "Unable to install because you haven't chosen to trust..." It appears "Error Reading from file: C:...iSLideTools.Setup.Online....msi. Verify that the file exists and that you can access it." during installation. Need to reload iSlide each time I start PowerPoint software Comments 0 comments Article is closed for comments.