cannot login to website using firefox in safe mode?

Please explain the problem in detail. What happens? What is the exact error messages?

Many site issues can be caused by corrupt cookies or cache.

• Clear the Cache and
• Remove Cookies

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Cookies; Delete cookies to remove the information websites have stored on your computer {web link}

• Cache; How to clear the Firefox cache {web link}

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

How to disable Hardware Acceleration {web link}

Do you get "Error: The username and password combination entered does not match our records." ?

I notice that the login form on optumrx.com sends the username and password input to https://hsid11.optum.com/protected/login/authenticate for checking. Since that is technically "cross-site" or "third party", a setting or add-on that limits cross-site requests or passing data to and from third party sites could be a factor.

My user name on optum's login page came up as, john122@ using FF. Checking my profile via chrome, user name is, johnC142@.

So back to FF and delete all; cookies, logins, passwords, and data. Still login shows, john122@. Then I deleted the user name. When I started to type my name a drop down name popped up. I. used the down arrow key to highlited the saved name and deleted it. Retype johnC142@ and all is well. Tried to explain this as well as I can, any question, just ask. Thanks for the reply's. JEC

Yes it does, all's good so far.