Topic
Logging in from a workstation or a client machine using Windows STS hits the following error:
An error occurred trying to authenticate the user.
System.Runtime.InteropServices.COMException (0x8007052E): The user name or password is incorrect.
The same credentials work locally on the K2 Server and also when opening the K2 Sites in Incognito.
Instructions
Clean up or update any old entries in the Windows Credential Manager in the workstation or client machine.