Sony WH-1000XM5 ANC Not Working: Causes and How to Fix It

Cause 1: Adaptive Sound Control Is Overriding Your Setting Sony-documented

This is the single most common reason owners think their ANC has broken when it hasn't.

What it is

Adaptive Sound Control is a feature in the Sony Headphones Connect / Sound Connect app that detects what you're doing — sitting still, walking, running, being in transit — and automatically adjusts between Noise Canceling and Ambient Sound accordingly.

According to Sony's official support documentation, when Adaptive Sound Control is turned on, the headphones will automatically switch the Noise Canceling function to Ambient Sound Control based on detected motion, even if you manually set Noise Canceling a moment earlier. Sony's own troubleshooting guide for "the noise canceling effect is weak or not working" lists this as the first thing to check.

Why it matters

If you switch on Noise Cancelling, then stand up and walk to another room, the headphones may interpret that motion as "walking" and quietly swap you into Ambient Sound. To you, it feels like the ANC randomly stopped working. To the headphones, they're doing exactly what a feature you may not remember enabling told them to do.

The fix

1. Open the Sony Headphones Connect (or newer Sound Connect) app.
2. Go to the Sound or Ambient Sound Control section.
3. Turn Adaptive Sound Control off.
4. Manually select Noise Canceling mode instead of Ambient Sound.

Who this fix helps

Anyone who set up Adaptive Sound Control once, forgot about it, and now experiences ANC that seems to come and go depending on what they're doing.

Cause 2: The Headphones Are Set to Ambient Sound, Not Noise Cancelling Sony-documented

This sounds obvious, but it's a frequent culprit, especially after the touch controls get bumped accidentally.

What it is

The WH-1000XM5 has two ambient-sound-control positions accessible through the app or the NC/AMB button: Noise Canceling and Ambient Sound. If the slider or button is set to Ambient Sound, background noise is deliberately let through by design — that's what the mode is for.

The fix

1. Open the app and check the Ambient Sound Control setting.
2. If it's set to "Ambient Sound," change it to "Noise Canceling."
3. If you use the NC/AMB button on the headphones themselves, tap it and listen for the mode-change notification sound in your ear, which confirms the switch actually registered.

Cause 3: Poor Fit and Seal Sony-documented Owner-reported

Active noise cancellation on any over-ear headphone depends partly on passive isolation — the physical seal the ear cushion makes against your head. ANC processing reduces low-frequency noise electronically, but it can't compensate for a broken seal.

What Sony says

According to Sony's official troubleshooting guide, the noise canceling function may become significantly weaker if your ear is sitting outside the earpad rather than fully inside it, or if the headband length isn't adjusted so the earpad fully encloses your ear. Sony specifically instructs owners to adjust the headband slider so the entire ear sits inside the cushion.

What owners report

In owner reviews posted on retail sites, some buyers have described the ANC as strong for them while others describe it as "barely doing anything," with head shape and fit cited as a likely factor by at least one reviewer who felt the headband didn't suit their head shape. This is consistent with Sony's own explanation: the same headphone can perform very differently across different head sizes and shapes, hair thickness, and glasses use, because all of those affect the seal.

Common seal-breakers to check

• Glasses with thick arms, which create small gaps under the cushion.
• Hair (especially thick or braided hair) trapped between the cushion and your skin.
• A headband that's too loose or too tight for your head shape.
• Ear cushions that have compressed, hardened, or started to peel with age.

The fix

Readjust the headband slider so your whole ear sits inside the pad, remove glasses temporarily to see if the effect changes, and if the ear cushions are visibly worn, flattened, or cracking, consider that they may need replacing — foam and synthetic leather cushions degrade with regular use over time, and a degraded cushion cannot form the seal it did when new.

Cause 4: Outdated or Recently Updated Firmware Firmware

Firmware plays a direct role in how the WH-1000XM5's ANC processors behave, and Sony has released multiple updates to the headphones since launch.

What's documented

According to reporting on Sony's update history, the WH-1000XM5 received firmware version 2.0.2 in 2023, which added features like simultaneous LDAC and Bluetooth Multipoint support and head-tracking. Firmware updates on Sony's headphone lineup have, in other product lines, both fixed and introduced behavior changes — for example, reporting on the separate WF-1000XM4 earbuds documented a firmware update in December 2022 aimed at battery drain problems, and a subsequent update that some owners found made battery performance worse for their specific units. This history doesn't mean the WH-1000XM5's firmware is unstable, but it does mean firmware updates are a real variable, not just a formality.

Why this matters for ANC specifically

If your noise cancelling started acting up immediately after an app or firmware update, the update itself — or an interrupted update — is a reasonable suspect.

The fix

1. Open the Sony Headphones Connect / Sound Connect app and check whether a firmware update is available.
2. If one is pending, install it. Sony's update guidance for its recent headphones specifies that the headphones must not be connected to a charging cable or powered off during the update, since this can cause an incomplete or corrupted installation — and update installation can take up to roughly an hour.
3. If ANC problems started right after an update completed, try a full power-off and power-on cycle of the headphones once the update finishes, since some behavior changes only take effect after a restart.
4. If problems persist, check Sony's support site for a known-issues notice tied to that specific firmware version before assuming your unit is defective.

Cause 5: The Touch Panel or NC/AMB Button Isn't Registering Input Controls

If pressing the button or tapping the touch panel does nothing at all — no mode-change notification sound, no response — this is a different problem from "ANC is on but weak."

What Sony says

Sony's troubleshooting flow for this exact symptom (the touch sensor or NC/AMB button not working) is separate from the "weak effect" flow, and starts with confirming the function assigned to the button hasn't been reassigned to something else in the app, since the button's role can be customized.

The fix

1. In the app, confirm the NC/AMB button (or touch sensor gesture) is still assigned to "Ambient Sound Control" and hasn't been reassigned to something like Google Assistant or Quick Access.
2. Try the control again while watching for the audio notification confirming a mode switch.
3. If nothing happens, move to a reset (see Cause 6).

Cause 6: A Temporary Software Glitch (Reset vs. Initialize) Sony-documented

Sony's own documentation distinguishes between two different levels of "starting over," and it's worth knowing the difference before you do either.

Reset

This clears a temporary malfunction without erasing your settings or Bluetooth pairings. Sony's support guidance lists this as the step to try when noise cancelling still isn't working correctly after checking settings and fit. The exact button-and-timing sequence is model-specific, so it's worth checking Sony's official Help Guide for the WH-1000XM5 rather than a generic headphone-reset routine.

Initialize

This is a full factory reset. According to Sony's support documentation, initializing returns the headphones to factory settings and erases all Bluetooth pairing information, meaning you'll need to re-pair every device afterward. Sony positions this as a later step, after a simple reset hasn't resolved the issue.

Cause 7: Third-Party App or Software Conflicts Owner-reported

This is a narrower issue but worth knowing about if your ANC problems only show up in specific software, not in general daily use.

What's documented

In a discussion on Adobe's own community forum, a user of an earlier Sony WH-1000X-series headphone reported that opening Adobe Premiere Pro caused the noise-cancelling feature to turn off and blocked audio playback from clips, replaced by raw ambient sound. Adobe's community response attributed this to a possible driver or sample-rate compatibility issue between the software and the headphone's audio driver, not a hardware fault in the headphones themselves.

Why it matters

If ANC only misbehaves inside one specific application (a video editor, a conferencing app, a DAW), the headphones themselves are less likely to be at fault. The more useful test is whether ANC works normally in a different app, like your phone's music player, before troubleshooting further.

The fix

Confirm the sample rate settings in the problematic software match what your operating system's audio settings expect, update your OS's Bluetooth or audio drivers, and test the headphones in a separate, simpler application to isolate whether the issue is software-specific.

Cause 8: Genuine Hardware Failure Last resort

After working through settings, fit, firmware, and software conflicts, some ANC problems really are hardware failures. This is the least common cause but the one that requires a different response.

What owners report

On retailer review pages for the WH-1000XM5, some buyers have described their headphones failing entirely after roughly a year of use, with one reviewer stating Sony would not offer repair support and directed them to an independent repair center. Other reviews on the same pages describe physical issues — cracked hinges, headband padding wear, and stems that snapped under normal use — that are separate from ANC specifically but reflect the kind of physical fragility that can eventually affect the microphones ANC depends on. It's worth being clear about what this evidence does and doesn't show: these are individual owner reports, not data from a structured reliability study, so they establish that hardware failures happen, not how common they are across the wider ownership base.

Why this matters for ANC

The WH-1000XM5's noise cancelling relies on eight microphones distributed around the headphones. Physical damage — a cracked housing, water exposure, a mic port blocked by dust or debris — can degrade or disable ANC even if the headphones otherwise power on and play music normally.

The fix

1. Inspect the headphones for visible mic port blockage, cracks, or dust ingress, particularly around the earcup exterior where the ANC microphones sit.
2. Check your warranty status — Sony headphones typically carry a limited manufacturer warranty, and coverage terms vary by region, so check Sony's regional support site for your specific coverage window.
3. If you're out of warranty, get a repair quote from an authorized Sony service center before assuming replacement is your only option, since a single failed microphone can sometimes be repaired rather than requiring a new unit.