Windows users often receive SChannel Error 36887 (Fatal Alert 40, 42, 49) on their Windows 10 PC. The issue is majorly caused due to missing or damaged registry files. It can also be caused because of any third party AV interface disturbance. The Error 36887 is rather harmless and of low priority in nature, but there are some quick and way fixed to it. Since it is a generic error with different fatal error series ranging from 40, 42, and 49 serial code. There are few troubleshooting methods that you can use to fix Error 36887 (Fatal Alert 40, 42, 49) in your Windows PC. We will discuss them down below one by one, so you can follow them accordingly.
In some cases, the SChannel Error 36887 (Fatal Alert 40, 42, 49) is caused due to EC4 ciphers, which browser use to load ads and other in-page scripts on the webpage. Nevertheless, the fatal error can be a source of multiple error points. So it is important to go through all troubleshooting steps and fix them accordingly.
Also Read

What is SChannel Error 36887 (Fatal Alert 40, 42, 49)
Microsoft Secure channel is a secure protocol rule for TLS 1.1 and 1.2, and SSL 2.0 and 3.0. SChannel is used to send and receive encrypted signals from the client and the server. However, there are vulnerabilities. So in order to protect anything worse to happen, Microsoft restricts the user access to the server by showing error. This is one of the reasons for the Error code 38887 and Fatal Alert 40, 42, 49. However, the reason for the error to occur is not specific, so there are many possible reasons. Some of them are mentioned below.
- Due to Antivirus interference.
- Windows update is maybe blocking the TLS 1.1 support.
- Event Logging value is missing in Windows Registry.
- Your device files are maybe corrupted. Thus causing the error.
SChannel Error 36887 (Fatal Alert 40, 42, 49) : How to Fix?
Though there is no specific fix for this issue, you have to try all the solutions that are mentioned below.





