Recently, I purchased a server for an online game I created, and while trying to connect to the server I received the following error and couldn’t find a solution while trying to connect to the server. Later, after researching on the internet, I found that this problem could be solved by adjusting a few Regedit settings. 

I didn't want to deal with these methods right away, and I found out that this problem can also be solved with a Regedit file. So I immediately wanted to share it with you on my website.

Before moving on to the solution, I would first like to explain the reason for this error.

Due to Microsoft not distributing updates with a regular policy, an incompatibility issue arises between server computers and clients. 

In March 2018, Microsoft updated CredSSP, which is used in Remote Desktop connections. 

Subsequently, with the May 2018 updates, an update was sent that prevents access to machines with missing patches. 

Simply put, this problem arises when the server is updated, but the client computer is not updated.

If the operating system version of the remote server is not current or uses an old Windows version, updating it will resolve this problem. 

However, as this solution may take a long time, if you are in a situation where you can’t update the server immediately, you can use other methods.

When you install the Regedit file at the link below, you will be able to access the remote server.