UBB.threads PHP Forum Software Community Forums UBB.threads 7 Installation and Upgrade Support Database Error after update

We have UBB.Threads version 7.5.3
We get error database connection only visible to administrator

after change the 0 to 1 in my mysql.inc.php i see the following error :

Script:
Line#:
SQL Error: Connection using old (pre-4.1.1) authentication protocol refused (client option 'secure_auth' enabled)
SQL Error #: 2049
Query: Unable to connect to the database!

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Please help to solve the problem