Convert PST to NSF Database by using nUpgrade.exe

PST to NSFAre you switching from Microsoft Outlook to Lotus Notes? You must be looking for a solution that can help you convert PST to NSF format so that you can access your old mailbox data in IBM Notes client. If we talk about professional solutions, there are many in the market for such purpose. Also, you can try an easy manual trick to import mailbox data from Microsoft Outlook to Lotus Notes via the nUpgrade.exe utility.

Think about this scenario…

You were using Microsoft Outlook client previously. Now you’re switching to IBM Notes. You have all your important emails and other mailbox data in Outlook data files called PST aka Personal Storage Table. IBM Notes doesn’t support PST file format. As a result, you can’t access your old emails. If you try to open PST files in IBM Notes, you’ll find them inaccessible. You must know that IBM Notes only supports NSF aka Notes Storage Facility, a database format that stores all entire data including email messages and other business information. Now the question arises here:

How to import from Outlook to Lotus Notes?

There are two ways by which you can import mailbox data from Outlook to Lotus Notes client:

  • First, you should try the free solution. The nUpgrade.exe utility can help you export emails from Outlook to Lotus Notes.
  • Get a professional NSF to PST Converter tool to can convert PST files into NSF format, or

What is nUpgrade.exe? 

The nUpgrade.exe is a part of Notes migration tools. Its default location is the directory of Notes clients program. While installing the IBM Notes on your system, you’ll get an option to install migration tools. Remember if you don’t install migration tools on your system during IBM Notes installation, you can’t use nUpgrade.exe. In such situation, you need to run the installation again on your system and this time make sure that you select the option for installing the migration tool components. Also, read Get Lotus Notes Tutorial for Lotus Notes Migration


The default location of nUpgrade.exe is

C:\Program Files (x86)\IBM\Lotus\Notes

Before running the Notes Upgrade wizard, you need to confirm the following things:

  • Instead of “Internet Mail Only”, your Microsoft Outlook is configured on the workstation as Corporate or Workgroup.
  • Your Microsoft Outlook is configured as the default mail application on the workstation.
  • The Outlook PST and/or PAB files are linked to a profile on the workstation.

Use nUpgrade.exe to Convert PST to NSF

After confirming the above things, follow the steps shown below:

Step 1: Go to the Command Prompt. For that, press Win+R button.

run cmd.exe

Type cmd.exe and hit Enter.

Step 2: Now you need to change to the IBM Notes client program directory.

nUpgrade.exe command prompt

Type the directory path where the Upgrade Wizard (nUpgrade.exe) is located. And then, type the command nupgrade.exe 3 to launch the Upgrade Wizard.

Step 3: The Notes Upgrade Services wizard will appear on your screen.

how to use nUpgrade.exe

Click Next to continue to continue the process.

Step 4: Now select the Outlook profile linked to the file (PST or PAB) which you want to migrate.

how to use nUpgrade.exe

Then click Next again to continue the process.

Step 5: Now select your upgrade method in which you want Lotus Notes Upgrade converts your personal information.

how to use nUpgrade.exe

You may select Express or Custom option. Click Next to continue to continue the process.

Note: If you select the Custom option of Upgrade Method, you can select the items which you want to convert into IBM Notes. But if you select Express option of Upgrade Method, this will convert all the files, i.e. PST and PAB, linked to the selected profile, to IBM Notes. The Upgrade Wizard will create the IBM Notes database in a mail folder just below the Notes client data directory.

Step 7: In the Begin Upgrade screen, click Finish to begin the process. Once the process is started, you will need to provide the IBM Notes User ID.

Step 8: You’ll be notified when the Upgrade Wizard has completed the conversion process. The files (PST or PAB) which were converted will appear in the Folders view of a database, named as XXX_PersonalFolders.nsf. And the Outlook contacts which were converted will appear in the Personal Address Book on the local workstation, named as Names.nsf.

Important note

If you’re using IBM Notes 6.5.3 or any later version, you can’t place the contacts migrated from Outlook to Notes in the local Names.nsf. Instead, it’ll migrate the contacts as a part of the XXX_PersonalFolders.nsf database.

Note: If you want to add these contacts to the local Names.nsf, you need to open XXX_PersonalFolders.nsf database by using Notes client. And then, select Actions > Synchronize Address Book.

Also, refer to this blog post – Manual Way to Convert NSF to PST Format Effortlessly

You may also try a 3rd party tool that can help you migrate from Outlook to IBM Notes without any hassle. Get PST to NSF Converter of SysInfoTools Software and convert PST to NSF format of IBM Notes. You can use this software even if the PST files are corrupt. Within a couple of minutes, it can successfully export emails from Outlook to Lotus Notes without causing any alteration or changes to the original data. To know more about this PST to NSF Converter tool, please visit SysInfoTools website and download the free demo version of this software.

Watch the online video tutorial below