Cannot Open Attachments in Lotus Notes: Solved

Ugra Narayan Pandey | January 12th, 2021 | Lotus Notes

We use Lotus Notes to send emails on desktop with Domino v6.5.6 server.

One of my users received an email with an Excel attachment, which was forwarded to her. The sender then forwards it to him. It took a few hands before it reached my user.

When my users tried to open the attachment by double-clicking, they did not see the “Attachment” window to select “View”, “Open”, etc. She saw a rectangular box around the icon and the name of the attachment, but did not find the attachment activity window. The only things that are likely to happen are that the “new note”, “reply”, “reply to all”, “forward”, “delete”, “folder”, “copy” buttons disappear. It seems you cannot open or view files or save files.

IBM Lotus Notes are desktop-based email client applications for Windows OS. All its data items are stored in NSF file format. Moreover, it contains numerous components such as instant messaging, contact management, calendar, to-do list, blog and web browsing services.

However, many users may encounter these error messages when sending emails with attachments, such as “Cannot Open Attachments in Lotus Notes”. Therefore, in the following sections, we will discuss the main solutions.

How to Fix Cannot Open Attachments in Lotus Notes?

Only one solution available to fix the issue is to delete the cache.ndk and bookmark.nsf once and then restart the Lotus Notes application. Then try to open the attachment it will work. It recommends saving Lotus Notes NSF file into PST format to open associated attachments of emails.

How to Export Louts Notes NSF to Outlook PST Format?

Using Lotus Notes NSF to Outlook PST Converter software, you can convert NSF emails with attachments to PST file format. Attachments include images, documents and other data. The software can perform the export process without losing any data.

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  • Export Lotus Notes NSF Files to Microsoft Outlook PST Format
  • Convert NSF Data Items: Emails, Calendars, Journals, Tasks, Names.nsf
  • Save NSF Files of Any Size with No Size Limitation Feature
  • Convert IBM Notes Encrypted Emails to Outlook PST Format

Steps to Save Lotus Notes Emails into PST Format

You just have to follow the steps to export NSF file into PST format:

Step 1: Start Lotus Notes NSF to PST Converter Software


Step 2: Click on Add File or Add Folder Option to Browse File


Step 3: Apply Filters & Browse Destination Location to Proceed Further


Step 4: NSF File to Outlook PST Conversion Process Completed

Fix Cannot Open Attachments in Lotus Notes


We have described the only solution to fix the “Cannot Open Attachments in Lotus Notes” error. Also, suggested the best software to convert Lotus Notes NSF file to Outlook PST format.