Not long ago I automatically updated a WordPress blog. Once updated I got the following error message: “No Update Required – Your WordPress database is already up-to-date!”
The problem with the error message is that I was no longer able to enter into the admin panel as the message kept coming up. The page itself worked perfectly, but I was no longer able to enter into the administrator tool of WordPress. I immediately Googled the problem and read advices about flushing my browser cache, others recommended renaming the plugins folder to plugins1. Once everything is back up and working you can rename the plugins folder back to the normal name. In all situations I have read about the problem was caused by a cache plugin (W3 Total Cache or similar plugins).
I am not sure what really happened, because I just entered my WordPress folder using FTP where I found a file named .DS_Store and deleted it. After doing so everything worked as normal. But, I have never heard of this solution on any other site on the net, so guess maybe I was only lucky and this was not really the way it should have been done and maybe the problem was really fixed and it was just a coincidence that once I reloaded my browser after deleting the file everything worked. I think that is the truth!
After doing what I did I was planning to continue with the steps and advices I found at the following page which are much more scientific and better than the ones provided by me in this article. Therefore if you have the problem I described earlier, visit this article.