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ERR_UNKNOWN_URL_SCHEME: 7 Ways to Fix it
Try clearing the browser cache and cookies to fix the issue
6 min. read
Updated onOctober 4, 2023
updated onOctober 4, 2023
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Some Android app developers have reported that when they try to render their app in the browser, they come across the net::err_unknown_url_scheme error.
Thisweb browsing erroris a common problem, mainly a Chromium bug that first popped up in Google Chrome 40 and has remained since then.
In this guide, we will give you some effective solutions that will help you resolve the net::err_unknown_url_scheme error. Let us get right into it.
What is the ERR_UNKNOWN_URL_SCHEME error?
The net::err_unknown_url_scheme error is usually triggered because of some underlying web browsing error. It can also occur if the user tries to open multiple pages of the interface.
This error shows up if the requested website’s URL scheme is not recognized by the mobile device. Notably, because of this web browsing error, the browser rendering of the app fails.
What are the causes of ERR_UNKNOWN_URL_SCHEME?
We did some extensive research and after going through multiple forums, we have created a list of the most common causes that could trigger the ERR_UNKNOWN_URL_SCHEME error.
Let us now take a look at the different solutions that will help you resolve the net::err_unknown_url_scheme error.
How can I fix ERR_UNKNOWN_URL_SCHEME?
1. Disable the Chrome extensions
You should disable the Chrome extensions and check if this fixes the problem of ERR_UNKNOWN_URL_SCHEME or not.
In case you are interested, we have a guide that lists down some of thebest security and privacy extensionsfor Google Chrome.
2. Clear Chrome cookies and cache
Cache and cookies save the personalized settings of websites on your PC. If they go corrupt, they can hamper the smooth functioning of the browser.
Simply try clearing the Chrome cookies and cache files and check if this resolves the web browsing error.
3. Disable Firewall
Windows Firewall canoften conflict and block certain appsfrom running as it may find it problematic for your PC. In such a case, when you are testing an app, it is advisable to disable the firewall and check if this resolves the issue or not.
4. Turn off Hardware Acceleration
5. Switch to a different browser
You should switch to a different browser if none of the above solutions are working in resolving the ERR_UNKNOWN_URL_SCHEME error.
Chances are that the Chrome version that you are using is problematic and you are running the latest version. You will have to wait for a new version to fix the bug, but till then you can opt for a different browser.
Do not worry, as we have a guide that lists downsome of the best browsersthat you should check out.
6. Disable Non-standard URL schemes
Speaking of a technical solution, we would suggest that you disable any or every non-standard URL scheme apart from the HTTP:// and HTTPS://.
In doing this, you will bypass any of the errors associated with net ERR_UNKNOWN_URL_SCHEME. However, do note that disabling all other custom schemes will restrict you from using any special scheme mentioned earlier in this guide.
You will be alerted by theError: Unknown Link type errormessage if the browser cannot proceed with the custom scheme.
7. Add a new intent
You can also consider adding a new intent to load the contents in an external app. For example, you might want to use the maps:// scheme to open the map content in the default maps application.
Alternatively, you can use the mailto:// to open the email link in the mail app. To add the new intent, you need to use the IF statement. This will tell the device to open the special schemes in the dedicated or relevant app.
Is ERR_UNKNOWN_URL_SCHEME linked to any security threats?
Generally, the ERR_UNKNOWN_URL_SCHEME error isn’t linked to any security threats. However, when troubleshooting this error, you may have to disable the firewall.
If you leave the firewall disabled for an extended time, then your PC is exposed to the risk of getting infected by viruses or malware.
That is it from us in this guide. Multiple users have also reported facing theErr SSL Version or Cipher Mismatch issues, which can be resolved by applying the solutions mentioned in our guide.
We have also listed down solutions in respective guides to resolve theerr_connection_resetin Windows 11 anderr connection abortederrors.
More about the topics:Google Chrome Errors
Sagar Naresh
Sagar is a web developer and technology journalist. Currently associated with WindowsReport and SamMobile. When not writing, he is either at the gym sweating it out or playing country music on his guitar.
He is an avid traveler and has been to 15 countries, going to more places soon. TRAVEL and WORK is his mantra for a peaceful life.
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