| 1 | = Login fails with error message with HRESULT: 0x80131515 |
| 2 | == Symptom |
| 3 | When starting {{{CDCplus.exe}}}, the |
| 4 | system shows the error message: |
| 5 | > Could not load file or assembly '<filename>' or one of its dependencies. Operation is not supported.\\ |
| 6 | > (Exception from HRESULT: 0x80131515)" |
| 7 | |
| 8 | == Background |
| 9 | Windows mistrusts some libraries that are copied from external sources into system directories like {{{c:\Program Files}}}, marks them as insecure and blocks execution. This can happen on some systems, depending on the individual security policy situation. The block can be removed manually. |
| 10 | |
| 11 | == Solution |
| 12 | * Navigate to the progam directory of {{{CDCplus.exe}}} and find the DLL named in the error message. |
| 13 | * Right-click the DLL and select "Properties". |
| 14 | * On the tab "General" under "Security", there is the entry: |
| 15 | > The file came from another computer and might be blocked to help protect this computer. |
| 16 | * Click the button "Unblock". |