How do I fix handshake error?

What is TLS error?

TLS error is an error that is generated while communicating on the network level.

TLS error is typically not intended by a developer. However, when it happens to be an issue that has to be resolved asap, then developers have to go through troubleshooting, debugging and rectifying the error.

To avoid this kind of error, a developer needs to be aware of these kinds of errors. TLS error types. As we have already mentioned, TLS error is divided into different types: Transport Error - Errors that happen when a client or a server make a request but the server sends the request over the network in an incorrect way. It can happen due to incorrect network protocols being used.

Errors that happen when a client or a server make a request but the server sends the request over the network in an incorrect way. Certificate Errors - They occur when the server sends a certificate that is incorrect. A certificate error is typically triggered because the certificate itself is invalid or there is a problem with the issuer.

They occur when the server sends a certificate that is incorrect. Timing errors - These errors are caused because either the client or the server makes a request at an inappropriate time. An example of this kind of error is the following: A client makes a request and the server sends the request over the network only after some time has passed. This can happen because the network itself has a timing issue.

These errors are caused because either the client or the server makes a request at an inappropriate time. Protocols errors - The protocol errors are caused because the client or the server sends the requests over the network using the wrong protocols.

When you look at all of these, you'll see that all these errors are about the way data is sent on the network and this is why you are getting a TLS error. Why do I get this error?

What is handshake failure?

When a person starts to log in to an IAM account, he or she should see a window that appears on the login screen (as shown in Figure 4-1). Figure 4-1. When you try to log in to your IAM account, you should see a window that appears on the login screen. The window should say something like This person is now logging in. You can close this message window and click Continue.

The person who wants to log in clicks the Continue button. Then a text box appears. In this text box the person gives the username of the account they want to log into.

If the username doesn't exist, or the password entered is incorrect, then you get a dialog that says either That username is not found, or That password is not correct. Both text boxes will look like Figure 4-2.

Figure 4-2. The person who logged in and clicked Continue should see either That username is not found, or That password is not correct. If the user enters a name that doesn't exist, or a wrong password, then you get a dialog that says Either username or password are not correct.

At this point the user has two options. She or he can click Yes, meaning "I have tried again," and try to log in again, or he or she can click No, meaning "Please try again."

If the user clicks Yes, she or he has to repeat the steps above. Because the person must give a username in this particular step, it's called the sign in credentials. If the user clicks No, the IAM system tells the person that the sign in credentials aren't valid and tries to log the user out. If the username and password don't match, then IAM sends an error code back to the computer.

IAM systems usernames, passwords, and sometimes digital signatures. Usernames work as usernames. Passwords work as passwords. Digital signatures don't work the same way, so I won't go into that topic here.

When users log in, IAM makes several changes to help prevent you from trying to log in as someone else and stealing your log information.

How do I fix handshake error?

The server probably has an invalid signature.

You can try to validate the server certificate, using openssl like this: openssl sclient -connect www.yahoo.com:443
1> Verify return code: (0). 1> depth=0 subject= C=US/postal-code=44101, ST=California, L=Los Angeles, O=Internet Corp., OU=Yahoo! Inc., CN=*com
1> verifying OK. 1> Certificate subject=/C=US/postal-code=44101, ST=California, L=Los Angeles, O=Internet Corp.com 1> depth=2 issuer= /C=US/postal-code=44101, ST=California, L=Los Angeles, O=Internet Corp.com 1> certificate verify OK. ----BEGIN CERTIFICATE-----. ----END CERTIFICATE-----. Issuer=/C=US/postal-code=44101, ST=California, L=Los Angeles, O=Internet Corp.com 1>
Publish date: Tue, 26 Jul 2025 19:32:23 GMT. I don't know if there is a certificate problem on the server, or on your system, but you can use this as proof that it's in fact a bad certification (and not from some other server, which could be used to spoof messages): it has two CN names, but only one IP address, and is in a totally different country (and not USA).