Installed IE 8. And since then clickable links in Outlook don't work. I use XP Pro. Tried re-registering .dll's and resetting default browser. Still no luck.

Yeah, I don't think it is a problem with IE8 because this happens a lot when people change browsers - whether it be upgrading IE, changing to Firefox or Chrome or whatever. So it seems to be an Outlook, or a Windows problem. Is it only Outlook? If you have other Office products, Word, for example, do they work there?

There are some good steps listed here: Fixing Outlook Hyperlink Problems. I know you have tried some but I would suggest working your way down the list again.

Keep us posted and if still no luck, let us know what version of OL.

Thanks. I tried those suggestions in the webpage you recommended. They worked for a short time. But back to usual. Someone suggested it might be an overly aggressive registry cleaner. But thanks again. df.

Oh? Did you run a registry cleaner after running those fixes?