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Obviously, omitting the assignment to Ref shouldn't make any difference. Update: I have not tested the following exhaustively, but this simplified FormClose also avoids the AV, on my system at any rate: procedure TForm1.FormClose(Sender: TObject var Action: TCloseAction) Adobe Products + Activation Adobe Acrobat Reader DC 2020 V012.20041 Adobe Acrobat. I was about to see if the AV was avoided by forcing the RefCount down by repeatedly calling _Release but then Presto!, there was no AV after my first trace into FormClose exited. After AcroPdf1.Src := '', calling AcroPdf1._Release in the debugger evaluator returned a value of 4. I noticed that after it, Ref's value was 9. Can you confirm if this is caused by the same update that was mentioned in Acrobat DC 2017.009.20044, released on 4/11/17, as it is a bit different Is there a slightly different warning message shown in Adobe Reader as opposed to Adobe Acrobat Thanks. I originally included the Ref := AcroPdf1._AddRef just as an experiment. I have absolutely no idea why my FormClose avoids the AV problem, and before anybody else says so, yes, it looks mad to me, too! Hardly something that deserves the name "solution", but maybe it will suggest a proper solution to someone who knows more about COM and Ole controls than I do.
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ControlInterface to provoke the AV on shutdown procedure TForm1.FormCreate(Sender: TObject) ĪtZoom(200) // <- this line is to exercise the This is my FormCreate, which contains my only other code. Ref := AcroPdf1.ControlInterface._AddRef procedure TForm1.FormClose(Sender: TObject var Action: TCloseAction)
#Adobe acrobat reader update dc v15.009 code
Please try this code and let us know whether it avoids the error for you, because it certainly works for me and there is no AV, either in the FormClose or afterwards. As I said in a comment to Zam, with the current version downloaded today of Acrobat Reader DC, I get the exact same error as you.