My search stopped automatically crawling on Feb 28. I can still start it manually and it works but it doesn't work automatically.
When I went to Central Administration, I saw the following error:
Databases require upgrade or not supported.
Severity 1 - Error
Explanation The following databases require upgrade because their versions are older than the backwards compatible range:
Remedy Use Upgrade-SPContentDatabase to upgrade Content databases, or psconfig.exe to upgrade other databases. If some databases are too new, check the Patch Status page to find out if the current server are missing SharePoint software patches. For more information about this rule, see "http://go.microsoft.com/fwlink/?LinkID=142697".
Failing Services SPTimerService (SPTimerV4)
Rule Settings View
I have almost no knowledge in SP administration and have no idea how to solve this or why this happened. If anyone knows how to fix this please help