Troubleshooting Error 1069: The Service did not start due to a logon failure  :- 

Issue:

If you receive error 1069 when you start the vcenter server service , this is the result of a login failure.

Solution:

To resolve this, follow these instructions:

1. Open the services.msc From the Start menu, select Programs>Administrative Tools >Services.
2. Right-click vCenter service to open the pop-up menu.
3. Select Properties.
4. Click the Logon tab.
5. Re-enter the LOGON service user password.
6. start the vCenter  service .