Yes, you can combine your Password-protected PST files can be merged by using the Softaken Merge PST Outlook Software, but first, they must be unlocked. Merging locked PST files directly is not supported by Microsoft Outlook. To continue, use the correct password to open each PST file in Outlook, and if you wish to, remove the password protection. You can manually drag emails, contacts, and other items from each source file into a new PST file once all the files are available. Use third-party PST merge tools, as many of them can handle the merging process automatically once the correct passwords are entered. These tools support password-protected files. Use reliable software at all times to prevent security threats or data corruption. Before running any merge operations, it's also an excellent idea to back up your data.