For several weeks, I'm getting a notification on screen that there are plugin updates available, however I have no idea for what app or which plugin. Is there any way of getting specifics to help me along?
Markfug, which Adobe applications are installed on the computer? Did you install additional plug-ins for every installed app?
Please see https://helpx.adobe.com/creative-cloud/kb/troubleshoot-common-addon-installation-issues.html for information on how to troubleshoot plug-in errors.
Photoshop, After Effects, InDesign and Illustrator all have plugins.