MSProject COM Interop unstable behavior

We are extensively using COM Interop with MSOffice applications, and one of them - MSProject 2013, is behaving very unstable and strange.

Sometimes it starts just fine, and works fine, but from time to time it is bugging us with following error:

Retrieving the COM class factory for component with CLSID {36D27C48-A1E8-11D3-BA55-00C04F72F325} failed due to the following error: 80080005 Server execution failed (Exception from HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE)).

This can happen at any time, does not matter if windows was rebooted a few seconds ago, or uptime is several hours and MSProject was opened and closed several times.

What can we do to solve, or at least diagnose root cause of such a behavior?