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Adobe Acrobat - Create PDF 2.0 Unsigned

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For a while now FF has complained about my Acrobat Pro XI add-on, Adobe Acrobat - Create PDF 2.0, saying it is not officially signed by Mozilla. Isn't there an official signed version available by now? I've been bypassing the check so it's operative but I'd like to do things the kosher way if there's a valid version out there. is there?

For a while now FF has complained about my Acrobat Pro XI add-on, Adobe Acrobat - Create PDF 2.0, saying it is not officially signed by Mozilla. Isn't there an official signed version available by now? I've been bypassing the check so it's operative but I'd like to do things the kosher way if there's a valid version out there. is there?

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hi, please make sure that your adobe XI product is full updated and in case this doesn't help, refer to https://helpx.adobe.com/acrobat/kb/acrobat-dc-add-on-is-disabled-in-firefox-43-or-higher.html

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I think the workaround may be working, but within the add-ons it still says "it could not be verified for use within Firefox. Proceed with caution", but it is activated.