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Max Not Working? Here's How to Fix It

If Max won't open, keeps buffering, shows a black screen, or throws an error code, most cases are fixed by the same few steps: check your connection, restart the app or device, and sign out/in. Work down the list below, or jump to your exact error code.

Max error codes explained

Max won't load or open — App stuck on a loading screen or crashes on launch

Why: Stale app data or a brief outage on the device or network.

Fix:
  1. Fully restart the device (power off 30s, power on).
  2. Check a down-detector or try Max on another device to rule out an outage.
  3. Sign out of Max and sign back in.
  4. Reinstall the Max (HBO Max) app if it still won't open.

Max keeps buffering — Video pauses or spins mid-stream

Why: Not enough bandwidth reaching the device, or a congested Wi-Fi link.

Fix:
  1. Run a speed test — HD needs ~5 Mbps, 4K ~25 Mbps.
  2. Move closer to the router or connect by Ethernet.
  3. Pause other downloads and devices on the network.
  4. Lower the playback or video quality in settings.

Max black screen / no picture — Audio plays but the screen is black, or nothing shows

Why: HDCP/HDMI handshake issue or a corrupted app cache.

Fix:
  1. Reseat the HDMI cable and try a different HDMI port.
  2. Restart both the streaming device and the TV.
  3. Clear the Max (HBO Max) app's cache or reinstall it.
  4. In a browser, disable hardware acceleration and reload.

905 — Playback / streaming problem

Why: Max can't start the stream, usually a network or app issue.

Fix:
  1. Restart the router and the device.
  2. Update or reinstall the Max app.
  3. Lower the video quality and retry.

Full fixes & FAQ for Max 905 →

321 — Account or sign-in problem

Why: Max can't verify your account on this device.

Fix:
  1. Sign out of Max and sign back in.
  2. Confirm your subscription is active.
  3. Reinstall the app.

Full fixes & FAQ for Max 321 →

Can't Play Title — Selected title won't play

Why: The specific title failed to load while the rest of the app works.

Fix:
  1. Try a different title to confirm it's title-specific.
  2. Restart the app and device.
  3. Clear the app cache or reinstall.

Full fixes & FAQ for Max Can't Play Title →

Fixes for most Max errors

  1. Restart the device fully: power off, wait 30 seconds, power back on.
  2. Restart your network: unplug the modem and router for 30 seconds.
  3. Sign out of Max and sign back in.
  4. Update or reinstall the Max app.
  5. Turn off any VPN, proxy, or unblocker.
  6. Check the Max status page or a down-detector for a wider outage.

FAQ

Why is Max not working but my internet is fine?

Usually stale app data or a device glitch, not your connection. Sign out and back in, then restart the device. If a specific error code appears, look it up for the exact fix.

Is Max down right now?

Check whether Max fails on more than one device and look at a down-detector. If it only fails on one device, it's a local issue — restart that device and the app.

How do I fix Max buffering?

Run a speed test, move closer to the router or use Ethernet, pause other devices, and lower the playback quality in settings.