The problem lies in in-complete cleanup done by mysql uninstaller wizard. Reason of Access denied ErrorĪccess denied error for user ‘root’ problem occurs mostly when you un-install and install a new version or even previous version also. In this post, I will suggest you a good try which will solve this problem in 95% of cases. I faced this issue and when I googled it, I saw many others are also suffering from this problem frequently. Have you ever faced problem of Access denied for user or any login related issues after re-installing MySQL server.