Hello, Sorry for my reply. I'm also only F-Secure user (their home solutions). Maybe it is good to add more information about your situation. For example: -- what is F-Secure solution (F-Secure AV/IS/SAFE ; F-Secure KEY ; F-Secure Freedome; or something else); -- what is OS/platform (Windows, mobile platform or something else); -- how did you try to open it? And does it possible to re-check potential other steps to open? In addition, does it recent trouble and all was OK before? If yes - does there are some changes with system/device? Thanks!
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