Applicable Systems
WinCC
Symptoms
The SCADA system reports a user login failure. A user login attempt has failed.
Possible Causes
- Incorrect username or password entered
- User account locked or disabled
- Active Directory or domain authentication failure
Troubleshooting Steps
- Step 1: Verify the username and password
Credentials are correct - Step 2: Check the user account status
Account is active - Step 3: Verify the domain authentication connection
Authentication service is available
How to Reset
To reset: Resolve the login issue, then have the user log in again.
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Source: Siemens WinCC SCADA Manual, Siemens AG
Category: SCADA
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