Hi Robert,
Thanks for contacting us,
I'm sorry to hear that you cannot retrieve the emails from Outlook for Mac that you previously stored locally from a backup on an external disk.
One possible cause of this issue is that your Outlook profile is corrupted or damaged. To fix this, you can try to create a new Outlook profile and see if the problem persists. To create a new Outlook profile, follow these steps:
- Quit Outlook and go to **Finder** > **Applications** > **Utilities** > **Keychain Access**.
- In the left pane, click **login**, and then click **Passwords**.
- In the search box, type **Exchange** and delete all the items that have a kind of **MicrosoftOffice15_2 Credentials**.
- Go to **Finder** > **Go** > **Go to Folder**.
- Type
~/Library/Group Containers/UBF8T346G9. Office/Outlook/Outlook 15 Profiles/ and click **Go**.
- Move the folder named **Main Profile** to the desktop or another location.
- Restart Outlook and follow the prompts to add your email account to the new profile.
Another possible cause of this issue is that your backup files are not compatible with the current version of Outlook for Mac. To fix this, you can try to convert your backup files to a newer format using a third-party tool. One such tool is (name of commercial 3rd party product removed), which can convert your .olk15Message files to .olm files that can be imported to Outlook for Mac. To use this tool, follow these steps:
- Download and install (removed) .
- Launch the tool and click **Add OLK File**.
- Browse to the location of your backup files and select the folders that contain your .olk15Message files.
- Click **Open** and wait for the tool to scan and load your files.
- Click **Convert** and choose a destination folder for the converted files.
- Click **Save** and wait for the tool to convert your files to .olm format.
- Open Outlook for Mac and go to **File** > **Import**.
- Select **Outlook for Mac archive file (.olm)** and click **Continue**.
- Browse to the location of your converted files and select the .olm file that you want to import.
- Click **Import** and wait for Outlook to import your emails.
I hope this helps!
Regards,
Sola