How to reinstall a fresh copy of MyBB without data loss
You can save a backup of all files and the database for analysis later, then change your passwords for the server/hosting management panel, the email account it's tied to, etc., all the way down to MyBB administrator accounts; to make sure the filesystem is clean, you can:
  • use some software (e.g. WinMerge on Windows) to list differences between the set of files than your board runs off and a fresh MyBB package and manually delete/restore files that might be malicious, or
  • remove files (saving a copy of the uploads/ directory, and other ones if needed, like inc/plugins/, but you would have to review their content to make sure they don't contain malicious code) and upload files from the fresh MyBB package, upload inc/config.php (here is the code that generates it - it shouldn't contain anything else) and make sure the installation can connect to the database (with content intact) and restore the content in uploads/,
after that you would need to make sure there are no additional administrator accounts or unsafe settings (like allowed HTML in posts); the guide at should help, but also take a look at other security-related ones at

The DVZ Integrity Tools plugin can point out specific differences between current and original files as well as changes in the database structure. (DF3A 34D9 A627 42E5 BC6A 6750 1F2F B8AA 28FF E1BC) ▪

Messages In This Thread
RE: How to reinstall a fresh copy of MyBB without data loss - by Devilshakerz - 2018-08-12, 08:05 PM

Forum Jump:

Users browsing this thread: 1 Guest(s)