Posted By DaveHassall on 3/6/2023 5:49 PM
Do some basic checks of any modules you are using, don't just rely on the site firing up to assume all is working
In addition to that: check esp. pages that use third party extensions, such as modules, skins (themes) etc. If your site is using another language than English, also check for newer language resource packs.
BTW: You can include extension upgrades in the DNN upgrade. Unzip the installation pack, copy the extension upgrade pack (zip-file) in the appropriate folder under /install (e.g. language for language resource packs, module for modules etc.), rezip the installation pack and unzip it to the web root of your installation.