Recently I had some difficulties with Outlook 2013. Those problems were cured, but I have noticed that there is an extra differently named pst file. It has the name of one of the tests I was doing. It has some of the same names as the correct pst file. I deleted the unwanted file but then Outlook will not open. How do I go about merging the files that are not duplicates from the unwanted pst to the normal pst then get rid of the unwanted pst?
Once that is done, you can remove duplicates if you need to by right clicking on the folder in Outlook and selecting Clean Up Folder. You can remove duplicates this way.
Then, remove Email Accounts you do not need, Close any PST files open in Outlook (other than your main file). Close Outlook and move the unwanted PST files to a neutral location.
Open Outlook, see if all is well and then you can delete the PST files you do not want.