Product/patch installation or server upgrade required
Occasionally Health Analyzer shows the patch-mismatch error even after fully applying SharePoint cumulative updates. You even confirmed the successful upgrade status on the Upgrade Status page at https://caUrl/_admin/UpgradeStatus.aspx, but the Servers in Farm and Review Problems and Solutions pages show some servers are still not patched: Diagnosis Health Analyzer can produce the false report on some servers due to: One or more content databases still need to be upgraded. They get upgraded when you run psconfig or Config Wizard, but the upgrade status doesn't seem to “stick” afterwards sometimes. To verify, go to Upgrade and Migration > Review database status on Central Admin. A job or registry key is not in the correct state. The CreateProductVersionJob registry key was the culprit in the past (ref: http://blog.stefan-gossner.com/2016/08/09/sharepoint-patching-and-get-spproduct-local ). However, it appears that something else is also causing the error, as the false report...