| Event Id | 100 |
| Source | W3Svc |
| Description | The server was unable to logon the Windows account %1 due to the following error: %2 The data is the error code. |
| Event Information | According to Microsoft: CAUSE : This behavior can occur if the Windows NT user account that is configured for Anonymous Logon for the WWW Service is invalid or does not have the right to log on locally to the PDC. RESOLUTION : To resolve this behavior, replace the user account that is configured for Anonymous Logon in the WWW Service with a valid Windows NT account that has the right to log on locally to the PDC: 1. Start the Internet Service Manager. 2. In the right pane of the Microsoft Management Console (MMC), expand Internet Information Server and then expand server name. 3. Right-click Default Web Site, and then click Properties. 4. Click Directory Security. 5. In the Anonymous Access and Authentication Control group, click Edit. 6. Click Edit next to Account used for Anonymous Access. 7. Click Browse. 8. Select the account that you want to use for Anonymous Logon, click Add, and then click OK. 9. Click Enable Automatic Password Synchronization, and then click OK. 10. Click OK to close each open dialog box. 11. Quit MMC. When you are prompted to save the settings, click Yes. |
| Reference Links | HTTP 500 - Internal server error" error message when you try to open Webs while the IUSR account or the IWAM account is turned off FP: Error Messages When You Try to Open Webs While IUSR Account or IWAM Account Is Turned Off Access Violation and Event ID 100 Error Messages When You Start PDC That Is Running IIS Error in Event Log after Deleting the Anonymous User Account Error Messages If You Try to Add User When Subwebs Are Using Unique Permissions The Preferencing Page Does Not Indicate That the Mobile Password Is Expired Error in Event Log after Deleting the Anonymous User Account PRB: Error Message: The Server Was Unable to Logon the Windows NT Account IUSR_ HOW TO: Troubleshoot Kerberos-Related Issues in IIS |
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