Trying to Install Flash Player: Double-Clicking to no Avail

Question

Ever since Firefox notified me about my version of Flash Player being outdated, I've been trying to install the latest version. It successfully downloads, but double-clicking the icon - whether Firefox is closed or open - does absolutely nothing. At this point I've completely uninstalled Flash Player, and due to this problem no longer have it. My PC specs are as follows:

Operating System: Microsoft Windows XP Professional (5.1, Build 2600)

Language: English (Regional Setting: English)

System Manufacturer: Dell Inc.

System Model: Vostro 1014

BIOS: Phoenix ROM BIOS PLUS Version 1.10 A03

Processor: Intel(R) Celeron(R) CPU 900 @ 2.20GHz

Memory: 3036MB RAM

Page file: 1216MB used, 3182MB available

DirectX Version: DirectX 9.0c (4.09.0000.0904)

I deeply appreciate the help. I really don't want to use the extremely slow Google Chrome (need to figure that one out as well) when Firefox proves much better.

_maria_ · Answer

Hi,The online installer is signed using sha256 certificate, which is not supported on XP SP1 or SP2. You can try the standalone 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 that it'll work. Essentially, XP SP1 and SP2 are lacking support for the latest cryptographic technologies necessary to sign binary installers. If it doesn't work, the alternative is to upgrade your system to something that supports the latest cryptographic technologies necessary to sign binary installers. You'll begin see similar behaviour (installers not working) with more applications as Microsoft will stop recognizing the validity of apps signed with the older sha-1 certificate in 2016 (see Security Advisory 2880823: Recommendation to discontinue use of SHA-1 - Security Research & Defense - Site Home - TechN…)--Maria

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