Relevant for 365 even though the article was published some years ago as we will now use Visual Studio and Team Services.
If you want to get rid of the annoying login prompt when starting AX if you have EP installed. Follow this two step solution:
- Start Server Manager. Go to Local Server and IE Enhanced Security Configuration. Turn it off. You might have to log out and in again for this to take effect.
- Start an AX client. Go to SysAdmin\Setup\EP\Web sites. Copy the address at the bottom of the form. Open it in a browser. There is a button for it in the right part of the form. To the top left, click Site Actions and Site Access. Add your user and give it access to the site.
Now you can open AX without getting harassed by a login prompt each time.
If you try to start the AOS service and get Error 5: Access is denied you should check that the service account is Local Admin. We have had installations the work fine but after a modelstore update run into problems and it was because this. Why the service was allowed to start before the update is unclear but should be seen more as pure luck. The account should be part of Local Admin.