How to Move Outlook PST Files From Office 2007 to Office 2021
Question details
The user needs to transfer multiple Outlook PST files containing years of emails and folder structures from Office 2007 to a new Office 2021 installation.
- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Upgrading to a new computer with Office 2021 and migrating old POP/IMAP email accounts and PST data files.
- Observed behavior
- The user wants to safely link existing PST data files rather than creating new ones, and is inquiring about retaining the classic Office 2007 toolbar.
Ensure that Microsoft Outlook is completely closed on your old computer before locating and copying your PST files, as copying files while Outlook is open can lead to severe data corruption.
Manually Copy and Link Existing PST Files in Outlook 2021
Copying your old PST files and manually assigning them during the new account setup is the most reliable way to preserve your folder structures and historical emails.
PST files are still fully supported in Office 2021. To maintain your email continuity, it is highly recommended to use your existing PST files instead of letting Outlook generate new, empty ones.
If you are migrating from POP to IMAP, you can still attach your old POP PST files as local archives alongside your new IMAP account structure.
Open Outlook 2007, go to Tools > Account Settings, and select the Data Files tab. Note the exact file path for your active PST files.
Close Outlook completely. Navigate to the folder path you identified, copy the PST files, and transfer them to your new computer using a USB flash drive, external hard drive, or local network transfer.
Save the transferred PST files into a secure folder on your new PC, such as Documents\Outlook Files. Avoid saving them to cloud-synced folders like OneDrive, as this can cause sync conflicts.
Open Outlook 2021 and begin the manual setup for your POP or IMAP account. When prompted for a data file configuration, select the option to 'Use an existing Outlook Data File' and browse to the PST file you just saved.
Upgrade Your Office Suite with WPS Office
While you are managing your Outlook email migration, consider WPS Office as a lightweight, robust alternative for your document needs. It offers seamless compatibility with Microsoft Word, Excel, and PowerPoint files, a highly familiar UI, and requires no expensive subscriptions.
- 1. Download the Installer: Visit the official WPS Office website to download the free, lightweight installer for your operating system.
- 2. Install WPS Office: Run the setup file and follow the quick on-screen instructions to complete the installation.
- 3. Open Your Office Documents: Launch WPS Office and instantly open your existing .docx, .xlsx, or .pptx files with full formatting compatibility.
Frequently Asked Questions
Can I revert the Office 2021 Ribbon to the classic Office 2007 toolbar?
No, Office 2021 does not provide a built-in option to revert to the classic Office 2007 toolbar interface. You must rely on third-party add-ins if you strictly require the legacy menu style.
What happens if I accidentally create a new PST file in Outlook 2021?
If you create a new PST file during setup, your inbox will be empty. You can resolve this by navigating to File > Account Settings > Data Files in Outlook 2021, adding your old PST file, and setting it as the default delivery location.
Can I use my old POP PST file if I switch to an IMAP account in Office 2021?
Yes. While IMAP syncs emails directly from the server into its own OST data file, you can still open your old POP PST file in Outlook 2021 (File > Open & Export > Open Outlook Data File) to access your historical emails and folders as a local archive.
