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Why cannot I download EXE files after the antivirus function is enabled?

Created: May 28, 2020 12:38:33Latest reply: May 28, 2020 12:40:06 450 1 0 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hello all,

After the packet filtering, data filtering, or antivirus function is enabled on the firewall, clients on the intranet can access websites but cannot download EXE files from the websites.

For example, a client accesses the HP official website to download the printer drive. The request is blocked, and a log is generated. The requests for downloading other software, such as the input method software, are also blocked. Why?

Best regards!

Thanks!

Featured Answers
jason_hu
Admin Created May 28, 2020 12:40:06

Hello,
View the log. The threat name is Packed.Win32.Huer.64, which indicates that a packed file is blocked by the firewall. View the configuration file to check whether av heuristic-detect enable is configured to enable the antivirus heuristic detection function.

After this function is enabled, the firewall considers packed EXE files viruses and therefore blocks them. To resolve this problem, you can disable this function if the customer does not have high security requirements.

The antivirus heuristic detection function can detect high-risk files, which are probably virus-infected files. Therefore, this function is recommended for environments that have high security requirements. However, this function reduces virus detection performance and may generate false positives. So this function is disabled by default.

Glad to help you! Any further questions, let us know.

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All Answers

Hello,
View the log. The threat name is Packed.Win32.Huer.64, which indicates that a packed file is blocked by the firewall. View the configuration file to check whether av heuristic-detect enable is configured to enable the antivirus heuristic detection function.

After this function is enabled, the firewall considers packed EXE files viruses and therefore blocks them. To resolve this problem, you can disable this function if the customer does not have high security requirements.

The antivirus heuristic detection function can detect high-risk files, which are probably virus-infected files. Therefore, this function is recommended for environments that have high security requirements. However, this function reduces virus detection performance and may generate false positives. So this function is disabled by default.

Glad to help you! Any further questions, let us know.

View more
  • x
  • convention:

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