This usually means the ESET component that hooks into Windows audio/microphone access didn’t load correctly (driver/service/permission mismatch), so the “Microphone protection” feature can’t enforce its rules even though the rest of ESET may work.
Quick checks (low-risk)
- Update ESET fully: open ESET → Update → Check for updates, then reboot once more.
- Update Windows: Settings → Windows Update → install everything pending (including optional driver updates if offered), then reboot.
- Make sure the ESET services are running: Win+R → type services.msc → ensure “ESET Service” is Running and Automatic. If it’s stopped, start it and reboot.
- Temporarily toggle the feature: ESET → Setup → Security tools (or Privacy/Security depending on UI) → Microphone protection → turn OFF → reboot → turn ON.
Windows privacy / device access (common cause on new installs)
Even though ESET protects microphone access, Windows privacy settings can still block apps/services in ways that make protection modules appear “nonfunctional.”
- Windows Settings → Privacy & security → Microphone:
- Make sure Microphone access is ON.
- Make sure Let apps access your microphone is ON (if you use any microphone apps).
- If you use desktop apps (Zoom/Teams/Discord), ensure Let desktop apps access your microphone is ON.
- Then reboot and check if ESET’s warning is gone.
Conflicts and audio drivers
On new laptops, OEM audio suites can interfere with audio endpoints/hooking (Realtek console, Nahimic/A-Volute, Dolby, DTS, “AI noise canceling”, etc.).
- Install the latest audio driver from the laptop manufacturer’s support page (preferred over generic drivers), reboot.
- If you have an OEM audio “enhancement” app, try temporarily disabling its microphone effects/noise suppression and reboot.
- If you run any other security software with “webcam/microphone protection” (or system hardening tools), temporarily disable/uninstall that feature to rule out conflicts.
Repair ESET installation (often fixes broken protection modules)
If the warning persists after updates:
- Download the latest ESET installer from ESET’s official site (don’t reuse an old installer).
- Uninstall ESET from Windows Settings → Apps → Installed apps.
- Reboot.
- Install again, then reboot once more.
If it still shows “Microphone Protection is unfunctional”
At that point it’s best to treat it as a reproducible product issue on your specific build/driver set (rather than guessing).
- In ESET, open Tools → Log files and check for any entries related to Microphone protection/module startup.
- Generate ESET logs for support (ESET typically uses “ESET Log Collector” for this) and contact ESET support with the logs and a screenshot of the warning.
- If you want help here on MalwareTips, post: Windows version (10/11 + build), ESET product/version, and your laptop model + audio driver version, plus the exact text of the warning and any relevant ESET log entry (redact personal info).
Conclusion: start with ESET/Windows updates and Windows microphone privacy settings, then update the OEM audio driver; if it persists, a clean reinstall of ESET usually resolves the “module not functional” state, otherwise collecting logs for ESET support is the safest next step.