Cannot log in to Windows account

Question

I am having trouble logging in to my desktop. When I enter my credentials, it says "signing in" and immediately signs out. I cannot see the desktop. The event log shows the following error:

The User Data Access_22a7cb7 service terminated with the following error:

Class not registered

The User Data Access_22a7cb7 service terminated with the following error:

There are no more endpoints available from the endpoint mapper.

As a workaround, I have to log in to my admin account first, and then I can log in to this user account. This account has a 60-minute time interval, and after that, it signs out and gets killed. After the 60-minute interval, post signout, I cannot log in back unless I log in to my admin account.

Answer 1

The User Data Access service is a per-user service that provides apps access to structured user data, including contact info, calendars, messages, and other content. If you stop or disable this service, apps that use this data might not work correctly.

"no more endpoints available from the endpoint mapper"

I usually see this one when some process that uses dynamic ports does not close cleanly and at next call gets next higher available port until we eventually run out.
netstat -aon
should show this result, and a reboot should release the ports at least temporarily.

--please don't forget to close up the thread here by marking answer if the reply is helpful--

Answer 2

I'm not entirely sure why, but even if the service is stopped, when I log in or log out of my admin account, I can still access this particular account. It's only when I don't log in to my admin account that I'm unable to access this user account.