Step 1
Go to the installation folder of SysTools Export Notes.
Loaction will be C:\Program Files\SysTooles Export Notes
Now you will get the following screen as given:
Step 2
Now go to Assembly 8.5 folder.
Step 3
Here you will get Interop.Domino.dll. Copy it.
Step 4
Paste it in SysTools Export Notes folder.
Note: It will also work in case of missing attachments.