'An invalid cross certificate was found' error appears when a Lotus Notes client accesses a Domino server registered in a different domain

Technote (FAQ)


You receive an invalid cross certificate error when a Lotus Notes® user, User/A, attempts to access Domino Server/B. What is causing this error? How does one resolve this error message?


To resolve this error message:

  1. Using User/A's Notes client, open the local names.nsf and delete any cross certificates that exist for Server/B.
  2. Recreate the cross certificate to Server/B. To do this, click File -> Database -> Open and select a database on Server/B
  3. Accept the new certificate when within the messagebox that appears.

    Note: If User/A and Server/B are registered in different Domino directories, verify that User/A does not posses a Person document in the Domino directory that contains the Server document for Server/B.
  4. If User/A is in Server/B's Domino directory, delete the Person document entry and have User/A attempt to access Server/B again.

Document information

More support for:

IBM Domino

Software version:

7.0, 8.0, 8.5

Operating system(s):

AIX, IBM i, Linux, Platform Independent, Solaris, Windows, z/OS

Reference #:


Modified date:


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