I don't believe the two issues are related, except to provide a time frame for when the message started appearing, but after Mozilla blocked Adobe Flash Player 18.0.0.203 in Firefox 39.0 and then restored the plugin when version 18.0.0.209 was released earlier this month, I started receiving "An update to your Adobe Digital Editions is available" message each time I opened ADE 4.0.3. 
The "Adobe Digital Editions update" message continues on to say:
The Adobe Digital Editions update includes:
Click here to see complete list of new features
Updating takes under a minute on Broadband. No restart is required.
'Update' button + 'Remind Later' button
Clicking on the "Click here" link does not open a browser window or tab. Clicking on the "Update" button does not produce any response whatsoever. I haven't even bothered trying to click on the "Remind Later" button because I receive the message each & every time I open ADE, which I've used for years to read eBooks on my Windows 7 laptop just fine before now. 
I've tried uninstalling and reinstalling version 4.0.3 for Windows (which is the latest version of ADE!), but I still get the same message. Can anyone help me resolve this issue?
TIA,
MistyLake
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