To resolve this issue:

1. Stop all IWSVA services.
2. Backup the /etc/iscan/postgres/pgdata/postgresql.conf file.

3. Edit the postgresql.conf file:

   log_timezone = '<Continent/City>'
   
   timezone = '<Continent/City>'

    

   Continent and City must be replaced by values found in IWSVA console under Administration > IWSVA Configuration > System Time, under the Time Zone tab, like 'Europe/Berlin'.
4. Save the changes.

5. Start all IWSVA services.

    

   These commands will restart the corresponding IWSVA daemons, therefore, perform it when no traffic will be affected by the proxy being down for a few minutes.