Diagnostic notification via package update manager

Embodiments relate to systems and methods for diagnostic notification via a package update manager. A physical or virtual client machine can host a set of installed software packages, including operating system, application, and/or other software. A package manager tracks the set of installed packages and updates available for the installed set. A notification tool, in conjunction with the package manager, can monitor the user's selection of package update options, and compare those updates to a diagnostic database and/or current state of the client machine. Based on those determinations, the notification tool can generate notifications to the user advising them of potential conflicts, faults, or other conditions that may arise due to, or may surround, the prospective package update. The notification can permit the user to continue or terminate selected updates, and the notification tool can re-analyze any potential faults after an update is completed.