HomeTroubleshootingAll Products: Startup"Unable to cast COM object"

2.82. "Unable to cast COM object"

Applies to: @RISK 7.x

My @RISK was working fine, but some Windows updates ran, and now when I launch @RISK I get this message:

Unable to cast COM object of the type 'System. – Com Object' to interface type'AtRiskOL7.RiskProductionInformation'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{20534293-A49C-4BC4-B89E-3D0FD0CE3184}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))

Unfortunately, Windows 10 updates in October 2016 seem to break @RISK's COM interface for a number of users. We don't yet know if it's just the one mentioned in the error message above, or if other registrations are also broken, and would show up when you access particular features of one or more of the applications.

Therefore, we're presenting two methods to fix the problem. Option A is quicker, but fixes just the COM registrations for the AtRiskOL file listed in the error message. Option B is more work, but should fix any registrations that are broken, even if we don't know about them yet.

Option A — REGSVR32

  1. Open File Explorer: Windows+E, or double-click on any folder. Navigate to C:\Program Files (x86) — if that folder doesn't exist, select C:\Program Files. Double-click Palisade and then double-click RISK7.

  2. Within the RISK7 folder, locate AtRiskOL or AtRiskOL.dll. Press and hold the Shift key on your keyboard, right-click the file, click Copy as Path, and release your Shift key.

  3. In an administrative command prompt, type regsvr32 and press the space bar. Right-click in the window and select Paste. Press the Enter key.

  4. You should see a popup message about successful registration. This completes the fix. But if you get any similar error messages when using @RISK or the other applications, please tell us about them.

Option B — Repair or Upgrade

Last edited: 2017-02-17

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