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Avast Anti-Virus Firewall update blocked Flex. Need to change Avast settings

Pat N6PAT Member ✭✭
edited May 2020 in SmartSDR for Windows
I use Avast anti virus. Avast updated this morning and I could no longer use my Flex 6700. It did not show up in SSDR.

I checked and the upgraded Avast was blocking SSDR, DAX and CAT applications. I added overriding firewall rules but that didn't work.

I then noticed on the Firewall page that during the upgrade Avast changed my Ethernet connection from private to public which then violated the access rules. This was causing the problem. I changed it back to private and everything worked.

Anyone using Avast should watch out for this.


  • Ria
    Ria Member ✭✭✭
    edited November 2019
    I've also had issues with it. Currently looking into other solutions. 
  • Mike va3mw
    Mike va3mw Member ✭✭
    edited February 2018
    Yes, having your Ethernet connection marked as Public will shut you down.  It makes your laptop/computer think you are on a public lan connection (like being in a Starbucks).  

  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
    Will it serve up a french vanilla latte?
  • ka7gzr
    ka7gzr Member ✭✭
    edited March 2017
    No- you must come up here to Seattle to get that...
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
  • ka7gzr
    ka7gzr Member ✭✭
    edited March 2017
    That's not in Seattle- I see sunshine.
  • Paul Lourd
    Paul Lourd Member ✭✭
    edited May 2020
    Good tip.  In the last few months, Avast has broken a few things for me (DXLABS is common). I've gone back to Microsoft Essentials for now.  Go ahead, laugh. Nothing can protect you from a day one exploit!
  • Mike Steiner, K7QDX
    edited November 2019
    Wow 3 years later it just happened to me. Thank you... However I don't want a three year coffee. 
  • Johan _ SE3X
    Johan _ SE3X Member ✭✭
    edited November 2019
    Which version are you using? I use the Free version, hams are cheapos.., and haven't had any problem yet. Would be interesting to know if this is a problem when using the full paid version, vs the free one.
  • This thread was a life saver for a friend of mine

    Thank You so much I owe the N6PAT and friends a few beers




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