This solved the problem:
From FVD Global Options enable "Show Speed Dial on Startup" as Gleb Khegau advices.
Then from Firefox Preferences disable "Restore previous session".
Сервис поддержки клиентов работает на платформе UserEcho
This solved the problem:
From FVD Global Options enable "Show Speed Dial on Startup" as Gleb Khegau advices.
Then from Firefox Preferences disable "Restore previous session".