Cookies that pile up in time might interfere with your Username and Password management, so deleting them can resolve many of your access issues. To delete cookies in Internet Explorer:
Step 1. Select Internet options from the Tools drop-down menu located in the upper-right corner of your browser window.
Step 2. In the General tab, select Delete in the Browsing History section.
Step 3. Ensure the boxes marked Temporary Internet Files and Cookies are checked and select Delete.
Step 4. Close and then reopen the browser to allow for the settings to adjust.
You can always try using your browser's incognito or private browsing option to see if the problem is caused by something other than cache or cookies.