| Event Id | 1504 |
| Source | MSExchangeOMA |
| Description | Could not successfully parse the Authorization header. The user information |
| Event Information | According to Microsoft : CAUSE : This event indicates that the credentials provided for the user were not correct or were not in the proper format. SOLUTION : This could be a malicious attack. Take security measures in trying to track the browse source, and then potentially disabling the service temporarily. |
| Reference Links | Event ID: 1504 Of Source ID:MSExchangeOMA |
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