How to Fix Netflix Error NSEZ-403 on Windows

Some users are encountering the Error NSEZ-403 (Sorry, we’re having trouble with your request) when attempting to initiate video playback on Netflix. Most affected users are reporting that this issue only occurs with certain titles available on Netflix. The problem is reported to appear on Windows, macOS, iOS, Android, and some operating systems available on Smart TVs.

Netflix Error NSEZ- 403

After investigating this particular issue, it turns out that there are several different underlying issues that might be responsible for this error. Here’s a list of potential scenarios that might be responsible for this Netflix error code:

  • VPN or Proxy interference – A VPN solution or a proxy service can also cause this type of issue and determining Netflix to block the connection due to geolocation rules violation. In this case, you should be able to resolve the issue by choosing a different VPN / Proxy provider or getting rid of the service altogether.
  • Glitched Netflix profile – As it turns out, there’s one but that affects Netflix users using Windows only that causes certain profiles to display titles that are not actually available for your current location. You can resolve this problem by deleting the profile before creating a new one from scratch.
  • Corrupted Netflix cookie – This problem can also occur due to a partially corrupted cookie or due to badly saved cookie data related to Netflix. In this case, you can fix the issue by clearing the Netflix cookie using the dedicated Netflix script or you can do it manually from your browser settings.
  • Hardware acceleration is causing playback issues – If you’re only seeing this error while attempting to stream content from a low-end rig PC, chances are hardware acceleration is having trouble being enforced due to your CPU limitations. To resolve this issue in this case, you need to disable hardware acceleration altogether.

Now that you are familiar with every scenario that might be triggering this error code, here’s a list of methods that other affected users have successfully used to resolve the Error NSEZ-403 on Netflix:

Disable VPN or Proxy server

According to a lot of affected users, this type of problem is often caused by a VPN solution that is rubbing Netflix the wrong way and determining it to block the connection to the device that is handling the playback.

As it turns out, Netflix has the habit of rejecting connections funneled through an anonymity app, especially under Windows.

In this case, you should be able to fix the problem by disabling or uninstalling your VPN or Proxy server. This method was confirmed to be effective by a lot of users having issues with Netflix playback.

If you’re using a VPN client or a Proxy server, follow the steps below to uninstall or disable these two anonymity solutions to prevent a conflict with the Netflix app:

A. Disabling the Proxy server

  1. Open up a Run dialog box by pressing Windows key + R. Next, type ‘inetcpl.cpl’ inside the text box and press Enter to open up the Internet Properties tab.
    Opening the Internet Explore page
  2. Once you’re inside the Properties tab, access the Connections tab (from the menu at the top), then click on LAN Settings (under Local Area Network LAN settings).
    Open LAN settings in Internet Options
  3. In the Settings menu of Local Area Network (LAN), go ahead and click on the Proxy server and then uncheck the box associated with Use a proxy server for your LAN.

    Disabling the proxy server
  4. Once you have disabled the Proxy server, reboot your computer and see if the problem is fixed at the next system startup.

B. Uninstalling the VPN Client

  1. Press Windows key + R to open up a Run dialog box. Next, inside the prompt that just appeared, type ‘appwiz.cpl’ inside the text box and press Enter to open up the Programs and Features screen.
    Opening the Appwiz.cpl utility
  2. Inside the Programs and Features menu, scroll down through the list of installed programs and locate the system-level VPN that you think might be conflicting with Netflix.
  3. Once you manage to locate the VPN client that you suspect might be interfering, right-click on it and choose Uninstall from the newly appeared context menu.
    Uninstalling the problematic VPN tool
  4. Once you’re inside the uninstallation screen, follow the instructions to complete the uninstallation, then restart your computer and see if you can use steam content from Netflix without seeing the same NSEZ 403 error.

If the same error is still occurring, move down to the next potential fix below.

Deleting the problematic Netflix profile

As it turns out, this Error NSEZ-403 issue can also be related to some kind of inconsistent data related to a particular corrupted Netflix profile. In this case, the issue is beyond your control, but it turns out you can do something to make it go away.

Several affected users have confirmed that they managed to resolve the issue by deleting the profile (not the account) and creating a new one to take its place.

Note: Although this has a high chance of allowing you to fix this issue, there’s a major drawback – Any saved info about the preferences of that profiles will be lost at the end of this procedure.

If you want to go through this, follow the instructions below to delete the problematic Netflix profile and replace it with a new equivalent that doesn’t have the same issue:

  1. First things first, access Netflix from your PC (any browser, it doesn’t matter) and sign in with the account that is triggering the NSEZ-403 error code.
  2. Click on Sign In (top-right) corner of the screen, then type your Netflix credentials to sign in successfully.
    Sign in with your Netflix account
  3. Once you are successfully signed in, click on your active profile icon (top-right corner of the screen), then click on Manage profiles from the list of available options inside the drop-down menu.
    Accessing the Manage Profiles menu
  4. From the Manage Profiles menu, click on the profile that is triggering the error.
  5. Once you’re inside the settings menu of the problematic profile, click on Delete Profile at the bottom of the screen.
    Deleting the problematic Netflix profile
  6. Confirm the operation at the confirmation prompt and wait until the process is completely deleted.
  7. Once the operation is finally complete, create a new profile from scratch, sign into it and see if you still see the same error code when attempting to play certain titles.

If the problem is still not fixed, move down to the next potential fix below.

Clearing the Netflix cookie

As it turns out, one of the most common instances that will produce this error is a partially corrupted cookie or badly saved cookie data that is forcing Netflix to terminate the connection.

If this is the main cause behind the issue, there are 2 different potential fixes that you can deploy:

  • You can do a full cleanup in order to wipe out the entire cache folder on your browser and also remove any current cookies that your browser makes use of.
  • You can ONLY remove the cookies and cake belonging to Netflix.

Note: If you decide to go for the focused approach, you should only remove the cookies associated with Netflix. But if you’re dealing with some kind of interference caused by a cookie that’s outside the scope of Netflix, the best approach is to go for a full cookie & cached data cleanup.

But regardless of the option you want to go for, we’ve put together 2 separate guides that will walk you through bot processes:

A. Cleaning the Netflix Cookie and cache

  1. Open the browser that you’re encountering the Error NSEZ-403 error on, visit the dedicated Netflix clear Cookies page.
    Note: This page contains an automated Netflix-developed script that will automatically clear the dedicated cookies that Netflix stores on the most popular browsers – This will work on the vast majority of 3rd party browsers as well as on Internet Explorer and Edge.
  2. Once you successfully visit the page above, you will automatically be signed out of your Netflix account. Revisit the Netflix page again and sign in with your account again by inserting your credentials again
    Signing up with the Netflix app
  3. Once you sign in with your Netflix account once again, attempt to stream content once again and see if the problem is now fixed.

B. Clearing all your browser cookie and cache

In case clearing the Netflix cookies weren’t enough in your case or you’re using a browser that is not supported by the cleanup Netflix script, it might be better to clear all your browser’s cookies and cache.

To make things easier, we’ve put together a series of sub-guides that will walk you through the process of cleaning your cookies and cache from every major browser on Windows.

After you locate the guide that’s compatible with your particular browser, follow the instructions associated with it.

Note: If you’re using a chromium-based browser that is not covered in your guide, you can simply follow the guide for Google Chrome.

If you already tried clearing the cookies and cache and you’re still encountering the same NSEZ-403 error, move down to the next potential fix below.

Open your browser without extensions or add-ons

Several users that were also encountering the Error NSEZ-403 when attempting to stream content from Netflix have pinpointed it to a problematic extension on Google Chrome or a problematic add-on on Firefox.

If you only see this error while streaming Netflix content from your Firefox or Google Chrome browser, you’ll be able to fix the issue by ensuring that they open their browser in safe mode (with no allowed extensions or add-ons).

Depending on your browser of choice (Mozilla Firefox or Google Chrome), follow one od the instructions below to ensure that no extensions or add-ons are allowed to run.

A. Disabling Add-ons inside Firefox

If you’re using Firefox, the quickest way of resolving this issue is to start Firefox in Safe Mode.

Safe Mode will start Firefox without any installed add-ons (extensions or themes). If the issue is no longer occurring while add-ons are disabled, you can conclude that one of them is causing the issue while Firefox runs in normal mode.

Here’s how to verify if this is true:

  1. Start by opening Firefox and typing “about:support” inside the navigation bar. Next, press Enter to land right into the Troubleshooting Information menu.
    Accessing the Troubleshoot Information menu
  2. Once you’re inside the Troubleshooting Information menu, click on Restart with Add-ons Disabled (under Try Safe Mode). When prompted by the confirmation window, click Restart once again.
    Restarting Firefox in Safe Mode
  3. At the next Firefox Safe Mode confirmation window, click on Start In Safe Mode to finally trigger the restart.
  4. Next, wait until your browser restarts in safe mode before checking to see if the issue is still occurring by attempting to stream content from Netflix.
  5. If the same problem is no longer occurring, restart your browser to return to normal mode.
  6. Next, type “about:addons” inside the navigation bar and press Enter.

    Accessing the Addons menu in Firefox
  7. Once you reach the extensions menu, systematically Disable every installed extension until you discover your culprit.
  8. After you figure out which of your installed extensions is causing the problem, Remove it and restart your browser.
    Disabling Firefox Plugins
  9. Finally, return to Netflix and see if the problem is now fixed.

B. Disabling Extensions inside Google Chrome

  1. Start by opening Google Chrome and type “chrome://extensions/” inside the navigation bar before pressing Enter to open up the Extensions tab.
    Open the extensions tab in chrome
  2. Once you get to the correct window, ensure that every toggle belonging to each installed extension is set to Disabled.
    Disable very Chrome extension
  3. After every Extension has been disabled, restart your Chrome browser and see if the Netflix issue has been resolved.
  4. If the problem stops occurring, return to the Extension menu and systematically re-enable all the extensions you previously disabled and test the video playback inside Netflix to figure out which extension is causing the issue.

In case this fix didn’t resolve the Error NSEZ-403 inside Netflix, move down to the next potential fix below.

Disable Hardware acceleration

Hardware acceleration can also be the underlying causes that might trigger this streaming error with Netflix.

This feature is enabled by default on both Google Chrome and Mozilla Firefox and is known to cause issues with streaming services on PC rigs with low specifications.

Some users that have also struggled with the Error NSEZ-403 have managed to fix the problem after they have disabled hardware acceleration from their browser settings.

Important: These modifications might cause certain hiccups in streaming (lags and feezes), but it’s still better than not being able to stream content from Netflix at all.

To make things easier for you, we’ve created 2 separate sub-guides that will walk you through the process of disabling hardware acceleration on Mozilla Firefox and Google Chrome:

A. Disabling Hardware Acceleration on Google Chrome

  1. Open your Google Chrome browser and click on the action button (top-right corner of the screen).
  2. Next, from the newly appeared context menu, click on Settings.
    Open Settings in Chrome
  3. Inside the Settings menu, use the Search Settings function at the top of the screen to search for ‘hardware acceleration‘.
  4. From the list of results, disable the toggle associated with Use hardware acceleration when available.

    Disable hardware acceleration in Chrome
  5. Once you do this modification, restart your browser and retry the streaming attempt in Netflix at the next browser startup.

B. Disabling Hardware Acceleration on Mozilla Firefox

  1. Open Mozilla Firefox browser and click on the action button (top-right corner of the screen).
  2. From the context menu that just appeared, click on Preferences then access the General pane from the next menu.
  3. Inside the General tab, scroll down to the Performance category and uncheck Use recommended performance settings. By doing this you’ll reveal additional options.
  4. Once additional settings are revealed, go ahead and uncheck the box associated with Use hardware acceleration when available.

    Disable hardware acceleration
  5. Restart your browser and see if the problem is now resolved.

If the same problem is still occurring when you attempt to steam content from Netflix, move down to the final method below.

Contact Netflix Support

If none of the methods above have proven to be effective in your case, your last resort is to get in contact with a LIVE Netflix support agent and ask them to investigate your particular situation.

Keep in mind that other users facing the same Error NSEZ-403 have reported that in their case, the issue turned out to be related to a geolocation issue affecting their account – The list of playable content included titles that were not available in their country, so whenever they were trying to play a title that was not actually available this error popped up.

If this scenario is applicable, the only solution is to get a live Netflix agent to investigate your current situation.

There are 3 different ways you can receive live support from a Netflix agent:

  1. Get in touch with a support agent via the Google Play or the App Store Netflix app. To do this, click on More (or your profile) > Help, then click on Call.
  2. Call 0800-672-123 and go through ask to get in touch with a technical agent.
  3. You can start a LIVE Chat with a Netflix agent by accessing the Contact Us Page and clicking on Start Live Chat.

Kamil Anwar

Kamil is a certified MCITP, CCNA (W), CCNA (S) and a former British Computer Society Member with over 9 years of experience Configuring, Deploying and Managing Switches, Firewalls and Domain Controllers also an old-school still active on FreeNode.