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Opera 51 - no connection during the first 10 minutes (firewall issue?)

  • I've been using Opera at my office (a large network with thousands of users) for many years.

    Since version 51, there is a weird problem. After starting the browser, no website can be opened for 10-15 minutes, while Chrome, Firefox, IE and Opera 50 work fine. Opera 51 tries to open the page, but nothing happens. No error message either. After that time, the browsing is normal. I've downgraded and upgraded 3 times, and it's always the same issue.

    Since this only happens in my office and not at home, I suppose it has something to do with the network firewall. Could it be that Opera 51 changed it's behaviour after startup that makes the firewall block access? Is there an Opera setting that can prevent this?

    Thank you

  • I have exactly the same problem, but BOTH in my office and at home. No problem with other browsers, just Opera. No firewalls installed, just a regular FTTH router in both places. I think it is browser related problem, since no other network service and application is experiencing problems.

  • I decided to erase Opera with all the data (I haven't done that in years on my office computer) and do a fresh install of Opera 51 64bit (I had the 32bit version previously).

    The connection problem no longer appears.