Back Office application troubleshooting

HTTP Error 502.5 - ANCM Out-Of-Process startup failure

If you receive this error message when opening the back office web application, it means there's an issue with accessing the back office application. This error page is the 'modern yellow screen of death', indicating a crucial problem with the hosting of the web app.

This error message may not reflect the root cause, which is why it is best that you look for more clues in the Event Viewer and log files of the back office web application.

In addition, please verify if you did the following items:

Did you install the ASP.NET Core Hosting Bundle?
Did you reset IIS?
Did you restart the server?
Are the connection strings in the appsettings.json properly escaped? In other words, did you enter SERVER\\INSTANCE instead of SERVER\INSTANCE?

HTTP Error 500 - Correlation failed when logging in to the back office

You may get this error message when you use a Chromium-based browser such as Google Chrome, Microsoft Edge or Opera. This error should be fixed in Dime.Scheduler 2020.3.0 but there's a workaround. You may have run into a change in the cookie-handling behaviour.

For Google Chrome: Paste chrome://flags/#same-site-by-default-cookies change the "Cookies without SameSite must be secure" to "Disabled".
For Edge: Paste edge://flags/#same-site-by-default-cookies and change the "Cookies without SameSite must be secure" to "Disabled".