Problem
On macOS, the user experienced network issues while using JetBrains IDEs (IntelliJ IDEA and WebStorm). They are unable to connect to JetBrains services because of network errors affecting the following actions:
- Install plugins
- Check for updates
- Activate the IDE
The user also noticed that the JetBrains Toolbox App could not complete downloads and remained stuck in a "Downloading" state indefinitely.
Cause
The issue is caused by McAfee's content filter blocking the connections required for JetBrains IDEs to access online services. McAfee doesn't log these blocking activities in its console, which made the issue difficult to diagnose initially.
Resolution
The issue can be resolved by disabling the McAfee content filter in the Mac settings. Once this filter is deactivated, the IDEs are able to connect to the online services without any further complications.
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