Knowledge base KB0217
Conflict with Digital Guardian: Closing Excel triggers 'HRESULT 0x800A03EC'
Problem
I have Digital Guardian 7.4 and think-cell installed. When I close Excel a think-cell error appears:

Solution
Digital Guardian fixed the issue starting with version 7.4.1.0178. For further information, refer to this Digital Guardian Support Portal article. Note that you have to be an authenticated Digital Guardian Support customer to be able to access it.
Workaround
In case you cannot update Digital Guardian, install think-cell 9, which will not display the error message anymore. Please download the current think-cell version from our download web page.