john

I have one manual solution to recover DBX files which you can try. You get various types of error messages when your files become inaccessible. The steps required to execute are given in this post: Extract DBX Files. I am quite unsure whether this solution will work on QQQ files too. Before trying this manual technique, create backup of your file. If this above manual solution doesn't work, then you need to use recovery software. The best feature of recovery software is it scans your file and recover data from it. After recovering data, it gives you the option to save the recovered data in any email format such as EML, MSG, PST, etc. One such software is DBX Recovery v2.0 from SysInfoTools. You can download, install and run the free demo version of this software.