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A
Anonymous
February 21, 2017
Question

Flash Update/Install exe file does not execute - WinXP SP2

  • February 21, 2017
  • 1 reply
  • 2602 views

WinXP Home 5.1.2600 SP2 32bit

Firefox 51.0.1 32bit

Flash Player update/install files won't execute.

It doesn't matter whether I dbl-click, I choose "open", I run from task mgr - nothing works.

Note that the exe file icon ("f" logo in lower left corner) is very dark red, practically/maybe black.  Looks odd.

For about a year now Firefox has disabled Shockwave Flash ver. 21.0.0.242 displaying this msg:

"Flash Player Plugin 21.0.0.226 to 21.0.0.242 (click-to-play) has been blocked for your protection."

I have tried disabling both anti-virus and firewall.

I have tried using Firefox - NPAPI install file.

The update never executes.  I've pretty much given up...  Anyone know what's going on?

(ps - before posting, I searched forum.  there appear to be many posts w/ same, unanswered question)

[moderator: edited title to include OS and Service Pack version]

This topic has been closed for replies.

1 reply

_maria_
_maria_
Legend
February 21, 2017

Hi davidl15395380 ,

This is most likely happening because the installers are signed with a sha256 digital signature and Windows XP SP2 does not support sha256 digital signatures (SP3 does support sha2556 digital signatures).  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, however, there is no guarantee it'll work.

--

Maria

A
Anonymous
February 21, 2017

I'm not sure what you're referring to at this link...   As I said in my OP, I've already tried using the Firefox - NPAPI install file, which is at the bottom of the page your link goes to.  Is that what you're referring to?

_maria_
_maria_
Legend
February 21, 2017

Hi,

As I said in my OP, I've already tried using the Firefox - NPAPI install file, which is at the bottom of the page your link goes to.  Is that what you're referring to?

That depends.  You mentioned you tried the NPAPI installer, but you didn't mention from where you downloaded the file and I'm assuming you are using the online installer downloaded from https://get.adobe.com/flashplayer.  To verify, what is the name of the installer file you are using?

The tell tale sign of a system not supporting sha256 digital signatures is the installer not launching at all, which is what you are reporting. In the end, if your system does not support sha256 digital signatures, the installer will not work.  You would need to update to SP3, which does support sha256 digital signatures.

--

Maria

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