Aras 12: Error: Cannot access OAuth Server due to 500 (Internal Server Error)


We are getting an error as "Error: Cannot access OAuth Server due to 500 (Internal Server Error)" while accessing Aras12. Please help me how to resolve this error.I'm attaching screenshot for your reference. 



  • Hi there,

    I see you posted on the other thread about this same issue, but I wanted to leave a comment here for people who find this in the future. Aras Innovator 12.0 has new requirements from Aras Innovator 11.0. Please check Section 2.1.2 of the 12.0 Installation Guide and ensure you have all of the pre-requisite applications installed. 

    This particular issue seems to be most commonly associated with missing the ASP.NET Core/.NET Core Runtime and Hosting Bundle version 2.1.8.


    Christopher Gillis

    Aras Labs Software Engineer

  • aras does a poor job of informing users that server requirements have changed.  I appreciate your diligence in responding to these messages, especially as gently as you do which is appreciated.  Nothing is more embarrassing than NOT reading the directions then asking for help only to be told to READ the directions.  

    My case was an upgrade and during an upgrade a user typically assumes the requirements have been previously met, furthermore, most software companies include the installation of necessary software.  

    Ill accept my portion of the blame for not reading, aras needs to do a better job of informing its users that requirements have changed, i mean you could have merely highlighted the section with a little note that said *ATTENTION*, instead aras chose to retroactively answer each question related to that specific issue on the community board.

    New aras looks good.

  • I personally think Aras does great job documenting!! (one has to read it)

    Yet I seem to have this specific component installed and getting the same error. Any other suggestion what may be the problem?

  • I needed to update .Net Framework 4.7.2 ASP.Net Core/.NET Core Runtime and Hosting Bundle on our server.  Hope that helps.  

  • Hello,

    I just saw this issue on another machine that also already had the runtime and hosting bundle. The issue with that machine was that it was brand new and a recent Windows update that had .NET 4.8 installed but not .NET 4.7.2. I was able to resolve this issue by installing the .NET 4.7.2 developer pack

    Could you check if .NET 4.7.2 is installed on the server you're having trouble with? One thing to note is that if .NET 4.8 is already installed, you won't be able to use the Runtime installer from the link above since it will complain that a newer version is already installed. That's why I had to use the developer pack instead.