Error Message

Log Name:      Veritas Enterprise Vault
Source:        Enterprise Vault 
Date:          5/23/2017 2:32:07 PM
Event ID:      8596
Task Category: Directory Service
Level:         Error
Computer:      EVDG.EV.LOCAL
Description:
Data decryption has failed.  

Caller: EV\vaultadmin 

Cipher text: EV//AwAAAAAAAACQAAAAVAxaPGMm82X1YIRKmGneavzb+6aV5ErpYw2ghnJmUn3NYkpIR
V-437-8596

Possible Causes:
1.  Vault Service Account is a member of the Domain Admins group
2.  Data in SQL for Domino ID file stored password is corrupt
3.  Data in the KeyStore table is corrupt

1.  Within Active Directory, remove Domain Admin rights from the Vault Service Account (VSA)
2.  Restart services and see if problem goes away, if not continue to next step
3.  In the Vault Admin Console Expand down through targets, Domino, Domain, Server, to Journaling Location, document the settings and then delete the Journaling location
4.  Now document all the servers under the Domino domain, the settings for each, Document the Domino Domain settings, and then delete the Domino domain.
5.  Now add the Domino domain back, all the Domino servers, and the Journaling location configuration
6.  After adding the Domino domain, target servers, and journaling location along with all configurations back test to see if the issue is still occurring.
7.  If at this point the issue is still occurring, call into support, reference this article for your case