Author Topic: Slow Lan Network speed : Paid Avast Internet Security  (Read 4845 times)

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Slow Lan Network speed : Paid Avast Internet Security
« on: March 05, 2018, 11:14:12 AM »
Hello,

I have a fully paid Avast Internet Security version and noticed that whenever the Firewall Component is active that my Lan Network speed/bandwidth drops by more than 50%. When I do a file transfer from a network mapped drive to a local drive generally the transfer speed reaches 1 gigabit , around 120 Mb/second. However when the Firewall Component is activated the transfer speed drops to 30-40 mb/second. When I turn off just the Firewall while leaving all other Avast Internet Security components active the speed revers back to 120 Mb/second.

Hence I am 100% sure the culprit lies with the Firewall of Avast Internet Security. I already set my Network Connection within the Firewall settings to "Private Network" as the computer along with all other machines in my Lan connects to one router within the Lan Network. What else can I try to regain my normal transfer speed? This problem also negatively impacts my Remote Desktop connections from one PC to another within the Lan network. Interestingly, the difference in transfer speed for file transfers is observed when I activate/deactivate the firewall on the PC from which the file is transferred/loaded. I do not perform any changes on the destination PC's Avast Internet Security settings onto which the file is transferred.

What am I missing or is this a bug?

Also, related, is there a way I can raise a ticket with technical support of Avast? I have not found a way to raise a ticket anywhere on the website. Thanks
« Last Edit: March 05, 2018, 11:21:32 AM by Matthias107 »

Offline Asyn

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #1 on: March 05, 2018, 11:55:27 AM »
- Which version of AIS..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

PS: Support: https://support.avast.com/contact
W8.1 [x64] - Avast Free AV 23.3.8047.BC [UI.757] - Firefox ESR 102.9 [NS/uBO/PB] - Thunderbird 102.9.1
Avast-Tools: Secure Browser 109.0 - Cleanup 23.1 - SecureLine 5.18 - DriverUpdater 23.1 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #2 on: March 05, 2018, 12:18:56 PM »
AIS version : 18.2.2328 (build 18.2.3827.0)
OS: Windows 10 Pro , 64 bit, 10.0.16299, Build 16299
No other security related software installed, only Windows build in Windows Defender but I assume it is deactivated upon initial AIS installation
I used Norton but this is a fresh Windows 10 install so on this system no prior AV was installed


- Which version of AIS..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

PS: Support: https://support.avast.com/contact

Offline Asyn

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #3 on: March 05, 2018, 12:20:17 PM »
1. Download Avast Internet Security: https://files.avast.com/iavs9x/avast_internet_security_setup_offline.exe
2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions..!!)
3. Reinstall Avast with the downloaded installer from point 1.
4. Reboot.
W8.1 [x64] - Avast Free AV 23.3.8047.BC [UI.757] - Firefox ESR 102.9 [NS/uBO/PB] - Thunderbird 102.9.1
Avast-Tools: Secure Browser 109.0 - Cleanup 23.1 - SecureLine 5.18 - DriverUpdater 23.1 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #4 on: March 05, 2018, 12:52:59 PM »
No change, same bandwidth throttle even after a complete AIS de-install and reinstallation ;-(

1. Download Avast Internet Security: https://files.avast.com/iavs9x/avast_internet_security_setup_offline.exe
2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions..!!)
3. Reinstall Avast with the downloaded installer from point 1.
4. Reboot.

Offline Asyn

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #5 on: March 05, 2018, 12:54:33 PM »
OK, follow instructions: https://support.avast.com/article/33/
W8.1 [x64] - Avast Free AV 23.3.8047.BC [UI.757] - Firefox ESR 102.9 [NS/uBO/PB] - Thunderbird 102.9.1
Avast-Tools: Secure Browser 109.0 - Cleanup 23.1 - SecureLine 5.18 - DriverUpdater 23.1 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #6 on: March 05, 2018, 12:58:27 PM »
thanks, will hopefully have someone from support contact me about this issue.


OK, follow instructions: https://support.avast.com/article/33/

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #7 on: March 05, 2018, 12:59:11 PM »
You're welcome.
W8.1 [x64] - Avast Free AV 23.3.8047.BC [UI.757] - Firefox ESR 102.9 [NS/uBO/PB] - Thunderbird 102.9.1
Avast-Tools: Secure Browser 109.0 - Cleanup 23.1 - SecureLine 5.18 - DriverUpdater 23.1 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #8 on: March 05, 2018, 01:05:14 PM »
quick follow up question if I may, I have not changed the defaults in this tool you asked me to download and run and clicked through and it exited automatically. I assume that it did send the support/dump files to support or do I have to do that manually? If yes, what is the email support address to send the files to?

Thanks


You're welcome.

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #9 on: March 05, 2018, 01:08:32 PM »
If you did follow the instructions, it got uploaded to Avast FTP server.
W8.1 [x64] - Avast Free AV 23.3.8047.BC [UI.757] - Firefox ESR 102.9 [NS/uBO/PB] - Thunderbird 102.9.1
Avast-Tools: Secure Browser 109.0 - Cleanup 23.1 - SecureLine 5.18 - DriverUpdater 23.1 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #10 on: March 05, 2018, 01:47:35 PM »
Bump, anyone else with suggestions/ideas? Though I am in contact with Avast support so far their suggestions (adding a custom packet rule to the firewall) did not improve/help matters either.

Anyone else who experienced a significant reduction in local network bandwidth/traffic when the Avast Internet Security Firewall is activated?

Thanks
Matt

Offline Alikhan

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #11 on: March 05, 2018, 07:11:32 PM »
I'll get this escalated to the developer of Avast Firewall for a response - I don't have this issue when transferring to a network drive but maybe there could be an issue somewhere.
Windows 10 Home 64-bit • Avast Free (latest stable version) •  Malwarebytes 4 Premium (On-Demand) • Windows Firewall Control • Google Chrome • LastPass • CCleaner • O&O ShutUp10 •

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #12 on: March 06, 2018, 10:18:42 AM »
I have not yet heard back from any tech support with a viable option to solve this problem. If this bandwidth issue cannot be resolved I will probably need to ask for a refund and choose a competing product because my local network as of now is severely limited due to some issue with the AIS firewall.



I'll get this escalated to the developer of Avast Firewall for a response - I don't have this issue when transferring to a network drive but maybe there could be an issue somewhere.

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #13 on: March 06, 2018, 10:57:53 AM »
I have not yet heard back from any tech support with a viable option to solve this problem.
Post your ticket-ID.
W8.1 [x64] - Avast Free AV 23.3.8047.BC [UI.757] - Firefox ESR 102.9 [NS/uBO/PB] - Thunderbird 102.9.1
Avast-Tools: Secure Browser 109.0 - Cleanup 23.1 - SecureLine 5.18 - DriverUpdater 23.1 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

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Re: Slow Lan Network speed : Paid Avast Internet Security
« Reply #14 on: March 06, 2018, 11:50:17 AM »
06143667 [ ref:_00Db0Z3Sf._5000N1Q7RwV:ref]

I have not yet heard back from any tech support with a viable option to solve this problem.
Post your ticket-ID.