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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: R. Hansen on February 11, 2018, 09:41:25 PM

Title: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 11, 2018, 09:41:25 PM
I have multiple problems with Firefox 58.0.2 x64 when using Avast. The only evidence I have is the crash reports, which show the faulting module is snxhk64.dll. Firefox is fully patched to version 58.0.2. Windows 10 1709 x64 fully patched.

It causes Firefox to fail to start, to spawn blank and broken tabs, and to crash outright in the middle of rendering a page, or just when I leave it running in the background.

I do not have the Firefox Avast add-ons installed, and I do not have mail shield installed. Just File Shield, Web Shield, and Behavior Shield.

I'm tracking this problem on Bugzilla:

https://bugzilla.mozilla.org/show_bug.cgi?id=1420963 (https://bugzilla.mozilla.org/show_bug.cgi?id=1420963)

You have to read down a bit before I figure out Avast is the root cause.

Uninstalling Avast and reverting to Windows Defender clears up all the problems listed in that thread. I would really rather use Avast, but Firefox crashes or fails to start so often I will have to leave it uninstalled if I can't fix it.

I have two other machines, a laptop and a desktop, that are running Firefox with Avast and not having any problems. The problem seems to be specific to this one machine.

I created exclusions in File Shield for C:\Program Files\Mozilla Firefox\* and C:\Users\[user]\Appdata\Roaming\Mozilla\* (where addon code is stored) to see if it's the realtime scanning that's causing the problem. Didn't help.

(http://i1376.photobucket.com/albums/ah32/rjhansen075/Crash%20reporter%20faulting%20module_zpsmy4btc2v.jpg)

Any help?
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: schmidthouse on February 12, 2018, 05:44:09 PM
Quote:
"I have two other machines, a laptop and a desktop, that are running Firefox with Avast and not having any problems. The problem seems to be specific to this one machine".

Agreed.

I also have the same OS specs as your issue machine with AIS installed and have had no issues running Firefox.(same version as you) :)
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 12, 2018, 08:32:47 PM
Quote:
Agreed.

I also have the same OS specs as your issue machine with AIS installed and have had no issues running Firefox.(same version as you) :)

Yup. So what do I have here? Malware? Because uninstalling Avast and letting Windows Defender do the realtime protection gets rid of all the problems.

I really hate Defender and want to use Avast, but other than a system refresh that might not help, I don't know what else to do here.

Thanks.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 12, 2018, 08:47:13 PM
I'm going to try a rescue disk and see if it doesn't pick something up.

In the meantime, I really need to know what that .dll does so I have a chance of fixing the problem.

Push comes to shove, I do a system refresh, but I'm really not looking forward to that.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 12, 2018, 10:02:31 PM
Additional steps taken:

1. Ran an Avast rescue disk booting from CD
2. Used Avastclear.exe in safe mode to completely remove Avast and then reinstall
3. Ran SFC /scannow

None of that worked. The two scans turned up negative.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 12, 2018, 11:03:17 PM
The firefox problem is already a known problem and nothing to do with this version of Avast.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 12, 2018, 11:03:51 PM
The system tray icon still isn't animated.  >:(
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 13, 2018, 12:36:29 AM
The firefox problem is already a known problem and nothing to do with this version of Avast.

Um, I beg to differ. I uninstalled Avast and it doesn't happen any more. Nada. And I've got a crash log full of that Avast module, too.

I would prefer people try to help me than cheer lead for Avast. I've been using it for years, and I'd like to resolve this issue.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 13, 2018, 12:40:28 AM
The firefox problem is already a known problem and nothing to do with this version of Avast.

Um, I beg to differ. I uninstalled Avast and it doesn't happen any more. Nada. And I've got a crash log full of that Avast module, too.

I would prefer people try to help me than cheer lead for Avast. I've been using it for years, and I'd like to resolve this issue.
I guess you misunderstood what I said. It has nothing to do with this version of Avast.
I didn't say it has nothing to do with Avast.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 13, 2018, 01:55:01 PM
More information here:
https://forum.avast.com/index.php?topic=215262.msg1447487#msg1447487
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 13, 2018, 07:16:45 PM
More information here:
https://forum.avast.com/index.php?topic=215262.msg1447487#msg1447487

Thanks Bob. Different issue though. I have an edge case here, since none of my other machines have a problem. I don't want to use another browser, though, so right now I'm stuck with Defender.

Microsoft Defender runs slow as a dog, but the Firefox instability is worse. I hope I can get Avast running right on this system again.

I did do an avastclear and a reinstall, so I'm not sure which version you mean, but I was running the latest version of Avast free.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 13, 2018, 07:20:49 PM
More information here:
https://forum.avast.com/index.php?topic=215262.msg1447487#msg1447487 (https://forum.avast.com/index.php?topic=215262.msg1447487#msg1447487)

Thanks Bob. Different issue though. I have an edge case here, since none of my other machines have a problem. I don't want to use another browser, though, so right now I'm stuck with Defender.

Microsoft Defender runs slow as a dog, but the Firefox instability is worse. I hope I can get Avast running right on this system again.

I did do an avastclear and a reinstall, so I'm not sure which version you mean, but I was running the latest version of Avast free.
You're talking about Edge and a Firefox problem ??? Two different browsers. I have no problems using Edge while running Avast.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 13, 2018, 07:50:14 PM
No Bob. I'm not using Edge. An "edge case" is a use case that is unusual or unique leading to an unusual result. Very hard to fix, and little incentive to work on it because it affects relatively few users.

I hope I can get this fixed, but I'm not hopeful.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: ssjseifer on February 14, 2018, 02:04:47 PM
I don't work for Avast, but you may want to look through any apps you may be running that filter your traffic such as proxies or ad blocking software such as AdGuard (unsure if the browser add-ons filter the same as the full bodied program does).  If you do, check its settings for an option that reads "Use WFP network driver" and disable it.  Restart your computer and the problem will vanish.  This driver seems to be in conflict with something Avast sees and is causing some kind of weird reaction that can cause Firefox to hang, crash, or Windows to Blue Screen. 

This may not be your problem, but the action fixed my problem where I was being told an Avast file (aswstm.sys) was the source of the crash.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 14, 2018, 05:04:52 PM
Avast is currently uninstalled.

Here's a dump of everything that has a network connection on my system:

Code: [Select]
Application Protocol Local Address Remote Address State Received Sent
=========== ======== ============= ============== ===== ======== ====
Backupper Service TCP STARLING: 6045 0.0.0.0: 0 LISTENING
CDPSvc UDP STARLING: 5050 *:*
Dnscache UDP STARLING: 5353 *:*
Dnscache UDP STARLING: llmnr *:*
Dnscache UDP STARLING: 5353 *:*
Dnscache UDP STARLING: llmnr *:*
Dropbox.exe TCP STARLING: 17500 0.0.0.0: 0 LISTENING
Dropbox.exe TCP STARLING: 843 0.0.0.0: 0 LISTENING
Dropbox.exe TCP STARLING: 17600 0.0.0.0: 0 LISTENING
Dropbox.exe TCP STARLING: 49856 localhost: 49857 ESTABLISHED
Dropbox.exe TCP STARLING: 49857 localhost: 49856 ESTABLISHED
Dropbox.exe TCP STARLING: 49875 localhost: 49876 ESTABLISHED
Dropbox.exe TCP STARLING: 49876 localhost: 49875 ESTABLISHED
Dropbox.exe TCP STARLING: 50994 localhost: 50995 ESTABLISHED
Dropbox.exe TCP STARLING: 50995 localhost: 50994 ESTABLISHED
Dropbox.exe TCP STARLING: 51002 162.125.18.133: https ESTABLISHED
Dropbox.exe TCP STARLING: 51168 ec2-34-202-250-235.compute-1.amazonaws.com: https CLOSE_WAIT
Dropbox.exe TCP STARLING: 51242 162.125.34.129: https CLOSE_WAIT
Dropbox.exe TCP STARLING: 51245 162.125.34.129: https CLOSE_WAIT
Dropbox.exe TCP STARLING: 51748 162.125.18.133: https ESTABLISHED
Dropbox.exe TCP STARLING: 52035 162.125.32.135: https CLOSE_WAIT
Dropbox.exe UDP STARLING: 17500 *:*
Dropbox.exe TCP STARLING: 17500 [::]: 0 LISTENING
Dropbox.exe TCP STARLING: 51755 2620:100:6018:4::a27d:304: https CLOSE_WAIT
Dropbox.exe TCP STARLING: 52022 2620:100:6018:3::a27d:303: https CLOSE_WAIT
EventLog TCP STARLING: 49665 0.0.0.0: 0 LISTENING
EventLog TCP STARLING: 49665 [::]: 0 LISTENING
FDResPub UDP STARLING: ws-discovery *:*
FDResPub UDP STARLING: ws-discovery *:*
FDResPub UDP STARLING: 49649 *:*
FDResPub UDP STARLING: ws-discovery *:*
FDResPub UDP STARLING: ws-discovery *:*
FDResPub UDP STARLING: 49650 *:*
firefox.exe TCP STARLING: 52118 localhost: 52119 ESTABLISHED
firefox.exe TCP STARLING: 52119 localhost: 52118 ESTABLISHED
firefox.exe TCP STARLING: 52120 localhost: 52121 ESTABLISHED
firefox.exe TCP STARLING: 52121 localhost: 52120 ESTABLISHED
firefox.exe TCP STARLING: 52122 localhost: 52123 ESTABLISHED
firefox.exe TCP STARLING: 52123 localhost: 52122 ESTABLISHED
firefox.exe TCP STARLING: 52130 localhost: 52131 ESTABLISHED
firefox.exe TCP STARLING: 52131 localhost: 52130 ESTABLISHED
firefox.exe TCP STARLING: 52124 a104-91-166-178.deploy.static.akamaitechnologies.com: http ESTABLISHED
firefox.exe TCP STARLING: 52126 forum-02.avast.com: https ESTABLISHED
firefox.exe TCP STARLING: 52128 72.21.91.29: http ESTABLISHED
firefox.exe TCP STARLING: 52129 72.21.91.29: http ESTABLISHED
firefox.exe TCP STARLING: 52140 server-52-84-64-143.ord51.r.cloudfront.net: https ESTABLISHED
firefox.exe TCP STARLING: 52150 8.249.5.252: http ESTABLISHED
firefox.exe TCP STARLING: 52156 ec2-35-162-190-12.us-west-2.compute.amazonaws.com: https ESTABLISHED
firefox.exe TCP STARLING: 52157 ec2-35-162-190-12.us-west-2.compute.amazonaws.com: https ESTABLISHED
firefox.exe TCP STARLING: 52162 ec2-35-165-15-150.us-west-2.compute.amazonaws.com: https ESTABLISHED
googledrivesync.exe TCP STARLING: 51155 yx-in-x7d.1e100.net: 5222 ESTABLISHED
googledrivesync.exe TCP STARLING: 51162 ord38s04-in-x0a.1e100.net: https CLOSE_WAIT
googledrivesync.exe TCP STARLING: 51176 2607:f8b0:4002:c00::54: https CLOSE_WAIT
IKEEXT UDP STARLING: isakmp *:*
IKEEXT UDP STARLING: ipsec-msft *:*
IKEEXT UDP STARLING: isakmp *:*
IKEEXT UDP STARLING: ipsec-msft *:*
iphlpsvc UDP STARLING: 64364 *:*
jhi_service TCP STARLING: 49920 [::]: 0 LISTENING
nvcontainer.exe UDP STARLING: 59521 *:*
NVIDIA Web Helper.exe TCP STARLING: 49840 0.0.0.0: 0 LISTENING
NVIDIA Web Helper.exe UDP STARLING: 48201 *:*
NVIDIA Web Helper.exe UDP STARLING: 59695 *:*
NVIDIA Web Helper.exe UDP STARLING: 60923 *:*
NVIDIA Web Helper.exe UDP STARLING: 63676 *:*
NVIDIA Web Helper.exe UDP STARLING: 63677 *:*
Origin Web Helper Service TCP STARLING: 3213 0.0.0.0: 0 LISTENING
RpcSs TCP STARLING: epmap 0.0.0.0: 0 LISTENING
RpcSs TCP STARLING: epmap [::]: 0 LISTENING
Schedule TCP STARLING: 49666 0.0.0.0: 0 LISTENING
Schedule TCP STARLING: 49666 [::]: 0 LISTENING
SetPoint.exe TCP STARLING: 59243 0.0.0.0: 0 LISTENING
simptcp TCP STARLING: echo 0.0.0.0: 0 LISTENING
simptcp TCP STARLING: discard 0.0.0.0: 0 LISTENING
simptcp TCP STARLING: daytime 0.0.0.0: 0 LISTENING
simptcp TCP STARLING: qotd 0.0.0.0: 0 LISTENING
simptcp TCP STARLING: chargen 0.0.0.0: 0 LISTENING
simptcp UDP STARLING: echo *:*
simptcp UDP STARLING: discard *:*
simptcp UDP STARLING: daytime *:*
simptcp UDP STARLING: qotd *:*
simptcp UDP STARLING: chargen *:*
simptcp TCP STARLING: echo [::]: 0 LISTENING
simptcp TCP STARLING: discard [::]: 0 LISTENING
simptcp TCP STARLING: daytime [::]: 0 LISTENING
simptcp TCP STARLING: qotd [::]: 0 LISTENING
simptcp TCP STARLING: chargen [::]: 0 LISTENING
simptcp UDP STARLING: echo *:*
simptcp UDP STARLING: discard *:*
simptcp UDP STARLING: daytime *:*
simptcp UDP STARLING: qotd *:*
simptcp UDP STARLING: chargen *:*
Spooler TCP STARLING: 49670 0.0.0.0: 0 LISTENING
Spooler TCP STARLING: 49670 [::]: 0 LISTENING
SSDPSRV UDP STARLING: ssdp *:*
SSDPSRV UDP STARLING: 64749 *:*
SSDPSRV UDP STARLING: ssdp *:*
SSDPSRV UDP STARLING: 64748 *:*
SSDPSRV UDP STARLING: ssdp *:*
SSDPSRV UDP STARLING: 64747 *:*
SSDPSRV UDP STARLING: ssdp *:*
SSDPSRV UDP STARLING: 64746 *:*
System TCP STARLING: microsoft-ds 0.0.0.0: 0 LISTENING
System TCP STARLING: wsd 0.0.0.0: 0 LISTENING
System TCP STARLING: 49664 0.0.0.0: 0 LISTENING
System TCP STARLING: 49751 0.0.0.0: 0 LISTENING
System TCP STARLING: 49753 0.0.0.0: 0 LISTENING
System TCP STARLING: 50993 localhost: 65001 ESTABLISHED
System TCP STARLING: 65000 0.0.0.0: 0 LISTENING
System TCP STARLING: 65001 0.0.0.0: 0 LISTENING
System TCP STARLING: 65001 localhost: 50993 ESTABLISHED
System TCP STARLING: netbios-ssn 0.0.0.0: 0 LISTENING
System TCP STARLING: 51990 ec2-52-54-187-129.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52036 server-52-222-218-163.msp50.r.cloudfront.net: https TIME_WAIT
System TCP STARLING: 52064 ec2-52-201-151-145.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52065 ec2-52-201-151-145.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52074 a23-45-130-54.deploy.static.akamaitechnologies.com: http TIME_WAIT
System TCP STARLING: 52075 a23-45-130-54.deploy.static.akamaitechnologies.com: http TIME_WAIT
System TCP STARLING: 52077 139.61.74.125: http TIME_WAIT
System TCP STARLING: 52085 139.61.74.125: http TIME_WAIT
System TCP STARLING: 52086 139.61.74.125: http TIME_WAIT
System TCP STARLING: 52087 139.61.74.125: http TIME_WAIT
System TCP STARLING: 52088 139.61.74.125: http TIME_WAIT
System TCP STARLING: 52089 139.61.74.125: http TIME_WAIT
System TCP STARLING: 52097 ec2-52-213-135-55.eu-west-1.compute.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52100 74.125.136.155: http TIME_WAIT
System TCP STARLING: 52102 65.254.178.107.bc.googleusercontent.com: http TIME_WAIT
System TCP STARLING: 52104 ec2-54-156-23-99.compute-1.amazonaws.com: http TIME_WAIT
System TCP STARLING: 52105 ec2-50-16-189-107.compute-1.amazonaws.com: http TIME_WAIT
System TCP STARLING: 52109 ec2-34-200-122-167.compute-1.amazonaws.com: http TIME_WAIT
System TCP STARLING: 52110 ec2-34-200-122-167.compute-1.amazonaws.com: http TIME_WAIT
System TCP STARLING: 52111 ec2-54-194-97-49.eu-west-1.compute.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52113 server-52-84-63-149.ord51.r.cloudfront.net: http TIME_WAIT
System TCP STARLING: 52114 ec2-52-202-198-212.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52116 ec2-34-200-122-167.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52125 forum-02.avast.com: https TIME_WAIT
System TCP STARLING: 52127 ec2-35-160-58-123.us-west-2.compute.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52132 ec2-54-174-51-114.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52133 ec2-54-174-51-114.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52134 ec2-54-208-235-147.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52138 server-52-84-64-143.ord51.r.cloudfront.net: https TIME_WAIT
System TCP STARLING: 52141 server-52-84-64-143.ord51.r.cloudfront.net: https TIME_WAIT
System TCP STARLING: 52142 server-52-84-64-143.ord51.r.cloudfront.net: https TIME_WAIT
System TCP STARLING: 52146 forum-02.avast.com: https TIME_WAIT
System TCP STARLING: 52147 forum-02.avast.com: https TIME_WAIT
System TCP STARLING: 52148 forum-02.avast.com: https TIME_WAIT
System TCP STARLING: 52149 ec2-23-23-107-57.compute-1.amazonaws.com: http TIME_WAIT
System TCP STARLING: 52151 209.17.68.150: http TIME_WAIT
System TCP STARLING: 52153 ec2-23-23-107-57.compute-1.amazonaws.com: https TIME_WAIT
System TCP STARLING: 52161 server-52-84-58-225.ord51.r.cloudfront.net: https TIME_WAIT
System TCP STARLING: 52163 72.21.91.29: http TIME_WAIT
System UDP STARLING: ws-discovery *:*
System UDP STARLING: ws-discovery *:*
System UDP STARLING: 57836 *:*
System UDP STARLING: 63678 *:*
System UDP STARLING: 64365 *:*
System UDP STARLING: 64366 *:*
System UDP STARLING: 64367 *:*
System UDP STARLING: 65000 *:*
System UDP STARLING: netbios-ns *:*
System UDP STARLING: netbios-dgm *:*
System UDP STARLING: 5353 *:*
System TCP STARLING: microsoft-ds [::]: 0 LISTENING
System TCP STARLING: wsd [::]: 0 LISTENING
System TCP STARLING: 49664 [::]: 0 LISTENING
System TCP STARLING: 49751 [::]: 0 LISTENING
System TCP STARLING: 49753 [::]: 0 LISTENING
System TCP STARLING: 52038 2600:1f18:42fe:8d01:cfb4:b388:a812:600c: https TIME_WAIT
System TCP STARLING: 52084 2600:1f18:6140:c903:8777:8fb:f926:34d7: http TIME_WAIT
System TCP STARLING: 52164 yv-in-x6d.1e100.net: imaps TIME_WAIT
System TCP STARLING: 52165 yv-in-x6d.1e100.net: imaps TIME_WAIT
System UDP STARLING: ws-discovery *:*
System UDP STARLING: ws-discovery *:*
System UDP STARLING: 57837 *:*
System UDP STARLING: 63679 *:*
System UDP STARLING: 5353 *:*
thunderbird.exe TCP STARLING: 51253 localhost: 51254 ESTABLISHED
thunderbird.exe TCP STARLING: 51254 localhost: 51253 ESTABLISHED
thunderbird.exe TCP STARLING: 52058 a104-91-166-105.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52059 a104-91-166-105.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52060 a104-91-166-105.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52061 a104-91-166-105.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52062 a104-91-166-105.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52063 a104-91-166-105.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52080 a23-61-160-154.deploy.static.akamaitechnologies.com: https ESTABLISHED
thunderbird.exe TCP STARLING: 52081 a23-61-160-154.deploy.static.akamaitechnologies.com: https ESTABLISHED
thunderbird.exe TCP STARLING: 52094 74.121.138.91: http ESTABLISHED
thunderbird.exe TCP STARLING: 52095 74.121.138.91: http ESTABLISHED
thunderbird.exe TCP STARLING: 52096 74.121.138.91: http ESTABLISHED
thunderbird.exe TCP STARLING: 52098 65.254.178.107.bc.googleusercontent.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52099 74.125.136.155: http ESTABLISHED
thunderbird.exe TCP STARLING: 52101 65.254.178.107.bc.googleusercontent.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52112 server-52-84-63-149.ord51.r.cloudfront.net: http ESTABLISHED
thunderbird.exe TCP STARLING: 52115 72.21.91.29: http ESTABLISHED
thunderbird.exe TCP STARLING: 51255 yv-in-x6c.1e100.net: imaps ESTABLISHED
thunderbird.exe TCP STARLING: 51256 yv-in-x6c.1e100.net: imaps ESTABLISHED
thunderbird.exe TCP STARLING: 51322 yv-in-x6c.1e100.net: imaps ESTABLISHED
thunderbird.exe TCP STARLING: 51328 yv-in-x6c.1e100.net: imaps ESTABLISHED
thunderbird.exe TCP STARLING: 52072 g2600-1407-a000-0385-0000-0000-0000-1b01.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52073 g2600-1407-a000-0385-0000-0000-0000-1b01.deploy.static.akamaitechnologies.com: http ESTABLISHED
thunderbird.exe TCP STARLING: 52144 yw-in-x6c.1e100.net: imaps ESTABLISHED
thunderbird.exe TCP STARLING: 52145 atl14s78-in-x0a.1e100.net: https ESTABLISHED
thunderbird.exe TCP STARLING: 52152 yw-in-x6c.1e100.net: imaps ESTABLISHED
W32Time UDP STARLING: ntp *:*
W32Time UDP STARLING: ntp *:*
WpnService TCP STARLING: 51073 13.89.185.177: https ESTABLISHED
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 19, 2018, 12:23:01 AM
It's a week later and I still can't run Avast on this one machine because it breaks Firefox 56, 57 and 58. The problems started with 56.

I've switched to Defender. No crashes in about:crashes for an entire week. Firefox is rock solid.

Is there anyone out there that can help me with this issue? I've been using Avast for over 10 years and prefer its high-performance (and sandboxing) in comparison to Windows Defender, but Firefox is non-negotiable on this workstation. Please?
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: Asyn on February 19, 2018, 05:42:30 AM
You could try Firefox ESR.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 20, 2018, 11:52:43 PM
You could try Firefox ESR.

Thanks, Asyn. Unfortunately, ESR ends after Firefox 61, so that only buys me a little time, but for the time being ESR works.

I finally decided to run Defender and the latest version of Firefox instead, but that was a good call.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: Asyn on February 21, 2018, 04:29:26 AM
OK, you're welcome.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 21, 2018, 12:56:52 PM
Strange I'm not having any problems with FF
(https://screencast-o-matic.com/screenshots/u/Lh/1519214064514-80759.png)
Using Windows 10 v.1709 and running Avast Free. Wonder what add-ons might be involved ???
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 21, 2018, 04:13:35 PM
@Bob: Yup. It's super weird. I've got two other machines in the household running the same stuff without a problem. Same add-ons too, so it's not the add-ons.

This one machine? Definitely something to do with Avast. Figuring I broke my Avast install somehow, I even ran Avastclear and reinstalled thinking a full cleanup/reinstall would fix my install, but it didn't help. Unless there's some file/setting Avastclear missed.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on February 21, 2018, 11:56:15 PM
Have you tried a clean install which should also include a new download of the Avast installation file.

Clean Install of Avast:
https://goo.gl/4Ptzkf

Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on February 22, 2018, 07:37:05 PM
Yeah. First thing I did was run Avastclear in safe mode and scrub through the registry getting rid of any stray entries. There was actually quite a few entries for the old NG module that Avastclear missed. Installed from a full offline installer downloaded from the latest version thread on the Forums.

No love.  :'(
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: Erroneus on February 28, 2018, 08:39:11 PM
I was seeing a similar problem on two machines with Firefox and Avast.

I'm done with Avast, it's causing to many problems. I can recommend Bitdefender Free
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: bob3160 on March 01, 2018, 03:50:19 AM
I was seeing a similar problem on two machines with Firefox and Avast.

I'm done with Avast, it's causing to many problems. I can recommend Bitdefender Free
Strange, I use Avast and have no problems with Firefox ??? ??? ???
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on March 04, 2018, 08:20:36 PM
Well, you guys really are the best. I'm keeping Avast on most of my machines because it has the best performance and doesn't turn up a lot of false positives.

Unfortunately, if no one can help me fix this one glitchy machine that has all the Firefox crashes, I'm stuck with Windows Defender.

I've tried other products, and Avast is the best I've found. I'll keep trying to reinstall it with each major version update of Firefox and see if the problem doesn't iron itself out.

ESR 52 and Firefox 55 work perfectly with this machine and Avast. 56 is a little glitchy. 57+ is crazy glitchy.

Thanks. You have a great product. I'm sure this is something they did with Firefox Quantum, since 55 worked fine (and works fine when I install it and don't upgrade).

I'll continue to work with the Firefox people and check in on this thread here on the Avast forums from time to time.
Title: Re: Avast causing instabliity in Firefox 58 browser (faulting module snxhk64.dll)
Post by: R. Hansen on March 07, 2018, 06:21:23 PM
I was seeing a similar problem on two machines with Firefox and Avast.

I'm done with Avast, it's causing to many problems. I can recommend Bitdefender Free
I tried and would not recommend Bitdefender. All sorts of shoddy practices. It doesn't make a restore point when it installs, the installer had problems on my machine (hung at 73% without intervention), and when I finally did get it installed the computer would not run for 5 minutes without blue screen crashes. The blue screens could have been me hacking the installer so it would complete, but it was a horrible experience.

That's why I know about the lack of a restore point (which every piece of properly programmed Windows software should make before it installs). I managed to get the uninstaller to run in my few minutes of working system time, so I didn't have to restore from a disk image, but it was looking that way if a crash happened before I could get uninstaller to work.

Their tech support was also awful.

I would recommend Avira as a competent alternative. I also have Panda, but I didn't try to install that. AVG is now basically a different UI over Avast, so I didn't try that either.

Really, for free AV, Avast is the best software out there, and it keeps your machine running with a very minimal performance hit. I hope this issue is fixed in a future Firefox update on my machine.