Problem Opening docx File

Hi,

I’m using Word.Application ActiveX Object to open a .docx files generated on a specific server

My problem is that when calling:

app_word.Application.Visible = true;
app_word.documents.open(o.file);

microsoft word opens nothing and when I check out on the server side for the specific file it surely is there and when I double click it opens correctelly ?

Any help for this bug?

Thank you in advance.

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