I was trying to add a hyperlink to an affiliate program which had a https address. For some reason Wordpress wasn’t allowing me to do it. I had no way of knowing why this was happening but finanlly figured out it was a cookie problem. All I had to do was clear my cookies and everything was fine again.
To clear your cookies you basically just do the following:
Microsoft Internet Explorer (IE)
1. Open IE and click on the “Tools” menu.
2. Select “Internet Options.”
3. Click on the “General” tab if it isn’t selected already.
4. Under the heading “Temporary Internet files,” click on “Delete Cookies…”
5. Click “OK” for the “Delete all cookies in the Temporary Internet Files folder?” prompt.
6. Click “OK” to exit.
Mozilla Firefox
1. Open Firefox and click on the “Tools” menu.
2. Select “Options.”
3. Click on the “Privacy” icon on the left.
4. Select “Cookies” and click on “View Cookies”
5. Select google.com from the list and press “remove cookie.”
6. Click “OK” to exit.