What should you do?

You create a Power App portal.

When a user signs into the portal the following error displays: user not found You confirm that the user’s sign in information is correct.

You need to determine the cause of the error.

What should you do?
A . Disable custom error messages.
B. Create a custom error message.
C. Enable diagnostic tools in Lifecycle Services.
D. Enable Maintenance mode.

Answer: C

Explanation:

Reference:

https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/lifecycle-services/monitoring-diagnostics

https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/lifecycle-services/user-logins