Fix: SChannel Fatal Alert 40

Fix: SChannel Fatal Alert 40

If you’ve seen the “SChannel Fatal Alert 40” error in your Windows Event Logs, don’t panic. This easy fix will help you get rid of it for good.

The “SChannel Fatal Alert 40” error is a common one that can occur in Windows 10, 8, 7, and Vista. It’s usually caused by a third-party security program that’s incompatible with Windows.

Fortunately, there’s an easy fix for this error. Just follow the steps below and you’ll be up and running in no time.

If you’re getting the “SChannel Fatal Alert 40” error, it means that your computer’s security certificate is expired or invalid. This can be caused by a number of things, but the most common is simply that the certificate has expired.

To fix this, you’ll need to get a new security certificate. The best way to do this is to contact your computer’s manufacturer or the company that manages your network. They should be able to provide you with a new certificate.

If you’re still getting the “SChannel Fatal Alert 40” error after getting a new security certificate, it may be caused by a problem with your computer’s configuration. In this case, you’ll need to contact your computer’s support team for help.

What is SChannel?

SChannel is the Microsoft Secure Channel technology that provides secure communication between a client and a server. It is used in a variety of protocols such as SSL, TLS, and Kerberos. SChannel uses encryption and digital signatures to protect data from tampering and eavesdropping.

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What is a Fatal Alert?

A fatal alert is an error message that is generated when an irrecoverable problem occurs during the execution of a program. A fatal alert typically causes the program to terminate immediately.

How to fix SChannel Fatal Alert 40

The SChannel Fatal Alert 40 error is a common error that can occur when trying to connect to a secure website. This error is usually caused by a problem with the website’s security certificate.

To fix this error, you need to contact the website owner and ask them to provide you with a new security certificate. Once you have the new certificate, you can install it on your computer and then try to connect to the website again.

If you still cannot connect to the website, it is possible that the problem is with your computer’s security settings. To fix this, you need to edit the registry and change the following setting:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Server

Change the “Enabled” value from “1” to “0”. After making this change, you should be able to connect to the website without any problems.

Conclusion

If you receive a “SChannel Fatal Alert 40” error message, it means that the Secure Channel (Schannel) security component in Windows has detected an error in the protocol being used by a secure website or application. This is usually caused by one of three things:

1. The website or application is using an outdated or unsupported protocol.
2. The website or application is using a protocol that is not secure.
3. The website or application is using a protocol that is not compatible with the Schannel security component.

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To fix this problem, you will need to update the website or application to use a supported and secure protocol. You can also try disabling the Schannel security component, but this is not recommended as it will make your computer less secure.

Further Reading

If you receive a “SChannel Fatal Alert 40” error when trying to connect to a remote system, it means that the SSL/TLS certificate on the remote system is not trusted. This can happen for a number of reasons, but the most likely cause is that the certificate has been self-signed or is otherwise not from a trusted Certificate Authority.

In order to fix this, you will need to install the remote system’s SSL/TLS certificate into your local trust store. Once the certificate is trusted, you should be able to connect to the remote system without any errors.

For more information on how to install SSL/TLS certificates, please see the following article:

https://support.microsoft.com/en-us/kb/245030

Fix: SChannel Fatal Alert 40

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