Moreover, (as I also alluded to in my previous response) I'm surprised that Adobe's update service does not identify my machine as running WinXP SP2 and give me some sort of warning that there is no update available w/o SP3, rather than just pushing me an update that cannot execute on my machine.

The ADM installer uses the SHA256 certificate, which may not be compatible with a computer that is running Windows Vista SP2 or Windows Server 2008 SP2.Īs I suggested in my previous response, this message (above) from Adobe could be improved by adding Windows XP SP2. This may happen because of a certificate problem. Is the Flash Player's ADM installer not launching? As far as your observation that 'The Microsoft tech note doesn't mention XP because Microsoft dropped support for XP years ago.', I never intended to refer to any Microsoft tech note, I was referring to the following Adobe help page: and specifically to item #8 on that page:Ĩ. I'm aware of the security issues you refer to - nothing I need to explore further here. You're best bet is to update to a modern system with all the advances in secure computing. These search results will give you lots of information: Īt minimum, you should try to update to SP3 if you can find an installation file for it, but that still leaves you out of any security updates released by Microsoft. You can get all the details by peerform an internet search for 'sha1 deprecation'. Some web browsers have begun notifying users that the site they are visting is using a sha1 digital signature by removing the lock icon in the address field and identifying the site as unsecure.

sha1 digital signatures (which xp sp2 supports) started being deprecated years ago and more and more companies are moving to sha256. Essentially you're running a very old, unsecure operating system easily targeted by malicious folks.

And we won't be reverting back to the sha1 digital signatures as they are just not secure. The Microsoft tech note doesn't mention XP because Microsoft dropped support for XP years ago.

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