Below we are describing Notes and Domino files & folders in brief.

• Names.nsf : Can be reffered as the Public Address Book or Name and Address Book. Also called Domino Directory. Automatic created by Domino server. Contains Server documents, Configuration settings, personal Documents and Internet Site Document. Administrators use Domino Directory to manage the Domino System.
• Log.nsf : All Domino Server has a Log file which reports all server activity and provides detailed information about databases and users on the server. Created automatic when user starts a server for the first time.
• Admin4.nsf : Also called Administration Requests Database. Created when server starts for the first time. Domino servers use replicas of this dtabase to distribute requests made on server to other servers in the domain.
• Notes.ini : A text file, contains mainy settings on whichboth Lotus Notes and Domino rely to work properly. Any incorrect change may cause both to run unpredictably.
• Mail.box : Special database on server, automatic created at startup. Acts as a temporary repository for all massages in transit to and from mail clients, applications and other servers. Server creates number of Mail.box database specified on Configuation Settings document.
• User.id : A unique file and security features of Notes that identifies Notes user. Created when a Domino Administrator registers a user. Contains name of the user, certificate from Certificate ID, public key, private key, password and encryption keys.
• .nsf : A database format, stands for Notes Storage Format. Commonly used for Lotus Notes client and Domino Server.
• .ntf: Stands for Notes Template File, contains structure element viz. views, forms, folders etc. Does not contain any document.
• Program Folder : A directory in which Lotus Notes and Domino Server is installed. In this folder Notes/Domino executable file are located along with Notes.ini. This folder is specified by user during installation process.
• Data Folder : In this folder Notes/Domino applications and templates are located. Specified by user during installation process.

Follow these steps:

• Check names.nsf is on right place or not. Location will be C:\\Program Files\IBM\Lotus\Notes\Data for single user install. For multiuser install C:\\Documents and Settings\Username\Local Settings\Application Data\Lotus\Notes\Data.

OR

Search for notes.ini. It will show you the correct location faster than searching the registry.

• Check names.nsf is there or not. If not, then restore or recreate the database.
• To recreate names.nsf, reconfigure the Notes client.
• To do this, open notes.ini and delete all rows below the DST line.
• Now start Notes, this will be prompted to reconfigure Notes.

This error comes when a Lotus Notes database is locally secured. If user performs any operation on that NSF database then this error comes. To remove this error we have provided a NSF local security eraser Securase which perform efficiently on this error and remove local NSF database security.