FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
The event indicates FortiGate was unable to decrypt and read a local credential. It can have multiple causes, including the following:
A GUI bug in older firmware versions when an administrator attempts to update a local user's password by appending characters to the existing password.
A misconfigured Kerberos keytab decryption.
If the cause is known and expected, the log itself is of no concern.
