There are two reasons for this as follows:

• Lotus Notes not installed on conversion machine. or
• NSF file is encrypted with .ID file. or
• Lotus Notes Client Configured for Domino Server.

For this, follow the steps discussed below:

Step 1

Check whether Lotus Notes is installed in a conversion machine or not.

• If not installed, install & configure Lotus Notes in a conversion machine. Lotus Notes should be stand alone or it should not be connected with Domino Server. How to install & configure Lotus Notes?
• If installed, then try to open NSF file by double clicking. If this does not work, then proceed to Step 2 & Step 3.

Step 2

Then, check for whether Lotus Notes is connected with Domino Server or not.

• If yes, then configure a new machine with Lotus Notes client (not connected with Domino Server) and Outlook for the successfully conversion process.
• If no, then check whether there is an error like: Local Access Protection. Then proceed to step 3.

Step 3

This step includes:

• Configure a new machine with Lotus Notes client (not connected with Domino Server) and Outlook for the successfully conversion process. and copy the .ID file associated with the NSF file in a new machine.
• Then open Lotus Notes, go to File -> Security -> Switch ID.
• Locate the .ID file and enter password.
• And then you will be able to open the NSF file on the conversion machine.