Your ID file has been corrupted, or is not an ID file
What happened
The User ID you specified is not a User ID, or the User ID has been corrupted and is no longer valid.
Note: Always keep a backup of your
User ID on a diskette, particularly after each time you receive certificates
allowing you access to additional IBM® Domino® servers.
What you can do
Use your operating system to replace the corrupted User ID with a copy of your backup User ID or ask your Domino® administrator for a new User ID. If you must get a new ID, you'll need to get new certificates as well. If you had any encryption keys from other Notes® users and you still need them, ask those users to send them to you again.