Can we add security to an application if we try to run it in sandbox?

As i have added security to a project and trying to run it in sandbox, but it is every time showing the error message that the username or password you entered is incorrect. Can anyone please let me know whether we can add security to an application if we want to run it in sandbox?
1 answers

Hi Bidisha, If you want to use the CloudAppServices of Mendix, you can add users via the launchpad. Go to, press the i next to your app and click on Manage App Users. If you want to have local users, you can add users by logging in using as administrator. If MxAdmin is not configured (I think it's not default anymore for Sandbox), you can create an after Startup microflow which creates or updates an user.