| Event Id | 105 |
| Source | Microsoft-Windows-ADFS |
| Description | The AD FS Web Agent for Windows NT token-based applications encountered a serious error. The Web agent was not able to redirect the unauthenticated client to the Federation Service. |
| Event Information | According to Microsoft : Cause : This event is logged when the AD FS Web Agent for Windows NT token-based applications encountered a serious error. Resolution : Enable the AD FS troubleshooting log If this error persists, enable the Active Directory Federation Services (AD FS) troubleshooting log. To perform this procedure, you must be a member of the local Administrators group, or you must have been delegated the appropriate authority. To enable the AD FS troubleshooting log: 1.Click Start, click Run, type regedit, and then click OK. 2.Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ifssvc\ Parameters 3.Right-click Parameters, click New, and then click DWORD Value. 4.In the New Value name box, type ADFSEvent, and then press ENTER. 5.Double-click the new entry, and then, in Value data, provide a value for one of the following levels (or add values to configure multiple levels) and then click OK: Warning: 0x01 Information: 0x02 Success: 0x04 Failure: 0x08 Verify Verify that you can access the Active Directory Federation Services (AD FS)-enabled application from a client browser and that the resource can be accessed with the appropriate authorization. If you cannot access the application successfully, verify that the Windows token-based agent is configured with correct URL values and that all configuration parameters contain valid values. To perform this procedure, you must be a member of the local Administrators group, or you must have been delegated the appropriate authority. To verify that the Windows token-based agent is configured with correct values: 1.Click Start, point to Administrative Tools, and then click Internet Information Services (IIS) Manager. 2.In the console tree, click YourComputerName(local computer). 3.In the console tree, double-click Sites, and then click YourWebSiteName. 4.In the center pane, double-click Authentication, highlight AD FS Windows Token-Based Agent, and then in the Actions pane click Edit. 5.In the AD FS Windows Token-Based Agent dialog box, confirm that the Enable AD FS Web Agent check box is selected. 6.Make sure that the following values are valid, and then click OK. Cookie path Cookie domain Return URL |
| Reference Links | Event ID 105 from Source Microsoft-Windows-ADFS |
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