I was unable to search for anything in my SharePoint portal. On inspection in the Central Administration panel, I got the error message in the title.
To correct this, I did as it said in the ‘remedy’ area, when clicking on the problem. In summary:
1) Fired up the PowerShell; in my case with Win 2008 R2 and SharePoint 2010 installed, this can be found as ‘Windows PowerShell Modules’ under the ‘Administrative Tools’ section on the from the start menu.
2) Run Upgrade-SPContentDatabase -id WSS_Content. If you want to upgrade a different database, you will need to find its GUID instead, which should be listed within the database name
3) You will be asked for confirmation as to whether you want to do this. Upon approving this, a percentage readout will trickle along PowerShell window. This may take a few minutes or more to complete, depending on how much data you have.
4) Your database for content should now be updated!
N.B. Having done the above, I found that SharePoint was still having problems with a lot of other database. My conclusion was that during the SP1 update, it did not update the databases. An easy resolution to this to go to:
Start -> All Programs -> Microsoft SharePoint 2010 Products ->SharePoint 2010 Products Configuration Wizard
This will save a lot of time! The wizard is automated, and fixed all problems for me :) Why the upgrade didn’t do this automatically is anyone’s guess!