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I have tried now for weeks to upgrade my Flash but the download window is always blank. I have even tried using 3rd party sites and it is same thing. This is really a pain. Is there any way to fix this? I have even tried using Chrome browser to upgrade and no luck.
[moderator: added os version to title for clarity]
This usually happens when the OS doesn't support SHA256 digital signatures, which the installers now use. Vista with Service Pack 2 should support SHA256 digital signatures. If you have SP 2 installed, see https://support.microsoft.com/en-us/help/2763674/you-cannot-run-an-application-that-is-signed-with-a... for assistance. If you don't have SP 2 installed you'll need to upgrade to SP 2 or a newer OS.
I have SP@ and went to link tried to download the update that said 64bit like it said and got message stating This was not needed for my system. I am to the point that I can not fun any games or anything on some sites do to flash not updating. I can not afford to get a new computer or windows 10 software right now.
You can try the offline installer, posted at the bottom of the Installation problems | Flash Player | Windows 7 and earlier page, in the 'Still having problems' section. There is no guarantee the offline installer will work. Just a suggestion to try.