My computer refuses to download Adobe Flash on the account of it being 'untrustworthy', and that it's 'certificate authentication failed'. Why is this? Why has the certificate been revoked and how can I undo it? Can someone help please!
Could you try the appropriate installer located on this page:
Hi Pat. Here is a picture of the message I recieve when trying to download flash normally:
As you requested, I'm running a 64-Bit operating system with Windows 7 Home Premium. I encountered this problem once before, the last time I had to update flash, but managed to work around it somehow. This time though, I just can't find a way to install it.
Are you trying to run the installer from an Administrator account?
If yes, and the message still appears, can you check if there is anything in the Local Security Policy (Software Restriction Policies or Application Control Policies) that blocks the installer? (Control Panel | Administrative Tools | Local Security Policy)
I am the administrator, and so I've tried to follow your advice. However, I couldn't find anything directly called 'Local Security Policy' or any of the other things you mentioned. I did however, find myself tring to import the adobe flash player policy in the windows firewall with advanced security. But much to my dismay, this message appeared:
Alas, I have been a few days without flash. I hope someone can help soon!
I couldn't find anything directly called 'Local Security Policy' or any of the other things you mentioned.
Can you try locating it via Start button, then type Local Security Policy into the search field.
It must be something in there; I don't know where else it could be blocked.
Sorry Pat, but I still can't find it. When I type in 'Local Security Policy' into the seach field you specified, I recieve a load of Word documents about iPad, iPhone and iPod licences. As I posted before, the only thing about policies that I could find was in the windows firewall and advanced security to which I recieved the message I posted before when trying to import adobe flash. Do you know why the certificate is revoked, or why my laptop classifies it as 'Not Trusted'? I know I haven't done it on purpose by myself, so I wonder why it has gone that way...
Turns out I've managed to work out how to fix it! On the internet, I went to Tools - Internet Options - Content - Publishers - Untrusted Publishers and removed Adobe from the list. I then downloaded Adobe from the direct link (just to be sure) that Chris posted. I don't know how on Earth it became untrusted but at least its sorted now! A big thank you to everyone who tried to help - I hope this post solves the problem for someone else.