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3 Ways to Fix Err_spdy_inadequate_transport_security Error

Simply follow our tips to quickly deal with this pesky error

3 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Chrome is a great web browser, but sometimes issues with it can occur. One issue that users reported is err_spdy_inadequate_transport_security message.

This issue usually affects web developers, and it can interfere with the developmentprocess. It’s also called the NS_ERROR_NET_INADEQUATE_SECURITY error and it usually occurs when accessing websites hosted on IIS 10.0.

What happens is that in its default configuration, the IIS 10.0 has the HTTP/2 protocol enabled. However, the protocol was not supported in the default configurations of Chrome and Firefox browsers.

However, fixing this issue is relatively simple, and today we’ll show you how to fix it.

What is ERR_ SPDY_ INADEQUATE_ transport_ Security?

What is ERR_ SPDY_ INADEQUATE_ transport_ Security?

This is an error that could be a result of using an outdated version of Chrome, old and corrupted browser cookies, or HTTP/2 is enabled.

Furthermore, if your Windows Server is using some weaker ciphers and protocols, this error message might be triggered as a result.

Before we start fixing this issue, it’s important to determine if the problem is only appearing in Chrome. To do that, you can use any other browser, but we would recommend using Opera One.

Opera One offers some unique features, and it allows you to organize tabs into workspaces. If needed, you can also use the built-in search to find any open tab with ease.

Opera One

How can I fix err_spdy_inadequate_transport_security error?

How can I fix err_spdy_inadequate_transport_security error?

1. Modify the registry

Keep in mind that these changes might cause your website to load slower. It’s also worth mentioning that this err_spdy_inadequate_transport_security Google Chrome fix applies only to Windows Server.

2. Change Chrome launch parameters

–use-spdy=off

–disable-http2

After doing that, the HTTP2 or SPDY protocols will be disabled in Chrome.

3. Update Chrome to the latest version

Updating your browser may clear this error so make sure you try this solution to get rid of this problem.

There you go! Now, when you encountererr_spdy_inadequate_transport_securityin Chrome, you will know how to handle it.

Users have also reported theerr http2 inadequate transport securityvariant, but you are covered either way.

Err_spdy_inadequate_transport_security Chrome error can cause problems on your PC, but hopefully, you should be able to fix it using our solutions.

Following the saying: In case ofinadequate transport security, call Windows Report, let us know in the comments section below if your problem was solved.

More about the topics:Google Chrome Errors

Milan Stanojevic

Windows Toubleshooting Expert

Milan has been enthusiastic about technology ever since his childhood days, and this led him to take interest in all PC-related technologies. He’s a PC enthusiast and he spends most of his time learning about computers and technology.

Before joining WindowsReport, he worked as a front-end web developer. Now, he’s one of the Troubleshooting experts in our worldwide team, specializing in Windows errors & software issues.

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Milan Stanojevic

Windows Toubleshooting Expert

Before joining WindowsReport, he worked as a front-end web developer. Now, he’s specialized in Windows errors & software issues.