I have a fresh install of Windows Vista Ultimate x64 SP2.
- The online installer doesn't launch at all, due to the sha256 digital signature (I have not installed the patch that would fix this).
- For the offline installer:
- I double-click the installer file
- The 'User Access Control' window displays, stating the file is not signed
- this is due to an update to the digital signature, which is not supported on Vista sp2, but can be ignored by the user.
- I click 'Allow' in the 'User Access Control' dialog window

- The Installer dialog window displays:

When you say "The furthest I have gotten is getting a request for approval to start the install" are you referring to the UAC dialog in step 3, or something else?
Can you check to see if the previous version, 25.0.0.171, installs? Previous versions are posted to the Archived Adobe Flash Player versions page. Scroll down to the 'Flash Player Archives' section. Download the 25.0.0.171 zip package. Extract the package and navigate into the 25_0_r0_171 directory. The file names are as follows:
- flashplayer25_0r0_171_win.exe = NPAPI plugin for Firefox
- flashplayer25_0r0_171_winax.exe = ActiveX Control for IE
- flashplayer25_0r0_171_winpep.exe = PPAPI plugin for Opera and Chromium-based browsers
Thank you.
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Maria
I think those may be the ones I've downloaded, though each of them starts "install_" etc. I don't get the Allow/Cancel dialogue, only the Windows confirmation dialogue. I'm going to try the approach you've given me, though, and see if I get anything different. Thanks.