Apple released "macOS 15 Sequoia" on September 17.
Some services and software might not be supported immediately after the update, which can cause problems.
Please be careful not to simply update the devices you use most until they are officially supported by the services and software you use.
[known problem]
Problem:
After updating to macOS 15 on an ESET-installed PC, web pages cannot be viewed.
Details:
the following knowledge bases are considered relevant.
[ALERT8723] Network connection lost after upgrading to macOS 15 with ESET macOS product v6
The current ESET Endpoint Security offering does not support macOS 15.
Solution:
Please refer to the above webpage and try "Remove the Network filter".
* Uninstallation is not recommended because devices connected to the JAIST Information Environment require the use of anti-malware software.
About using anti-malware software