Avast has very annoying bug which causes DNS resolve to cease work,
the only error indicating such in Event log is unable to resolve “ocsp.entrust.net”
stopping avast services and restarting them resolves this issues
it’s extremely annoying as this happens random and causes various software freezes as they hang on the DNS resolving timeout …
OS: Windows 7 SP2 x64
Hello Dwarden.Pls try out SP1 Beta 1 (2016.11.1.2242) of avast!https://forum.avast.com/index.php?topic=179067.0
thanks will give it try … those issues were really worrysome
unfortunately, this isn’t fixed in beta 2016.11.2244
Dwarden, what about turning SecureDNS off. Wouldn’t that help?
Does this happen only right after reboot/resume of the PC, or anytime during work?
this is another error I get
Name resolution for the name domrep.ff.avast.com timed out after none of the configured DNS servers responded.
@lukor this is bug with Avast! free , afaik there is no Secure DNS in it … (this is shame considering there’re free opensource DNSsec solutions already)
it’s happening random, multiple times per day … restarting/terminating Avast! service usually fixes it
note: I’m using multiple DNS servers (my, ISP, Google, NIC etc.) … so it’s highly unlikely they all ‘unreachable’ at same time while rest of internet services works
Dwarden:
still unfixed in 11.1.2245 … seriously dissapointed
using Google DNS, Czech NIC as priority (DNSsec and other security improvements supported)
normal Windows 7 x64 SP1 with all updates
everything was fine until 11.1.x
yes I have some custom hosts file but it’s just some static additions (i barely edit anything in it for some years)
still unfixed in 11.1.2253
Have you tried the default Host File to see if that makes a difference ???
Dwarden, please try to turn off Web Shield for a while. We would like to know if it helps.
I think it did but not 100% sure ,
the time until I had similar problem (but that could be just unlucky server/browser hiccup) was N times longer
note: I’m using EMET 5.2 just in case that’s important
still unfixed https://forum.avast.com/index.php?topic=185203.0
note: not using EMET atm.
usually when Avast! has issue with DNS those events appear in Windows Event Log
DNS client events: There was an error while attempting to read the local hosts file.
and random domains related one
DNS client events: Name resolution for the name dsn13.d.skype.net timed out after none of the configured DNS servers responded.
I don’t know if i am having the same issue, my Wifi is working perfectly and last night and just a few seconds ago i was disconnected from irc.geekshed.net and couldn’t connect to youtube it said in chrome a DNs problem… I waited 3 seconds and got back on and still had wifi connection…