1. Check the following system requirements are recommended for optimal use of your product:
Operating system: a recent version of Windows or OS X (Mac)
A recent version of a web browser
Adobe Flash Player (the most recent version)
Adobe Acrobat Reader to read PDFs
For tablets: the most recent version of Android or iOS (iPad)
To check your system configuration, click here.
2. Clear your browsing history
As you browse the web, most page data is cached locally on your computer to help pages load faster and reduces the amount of data you need to transfer over your internet connection.
To help keep your browsing history private, and to free up disk space on your computer, you can clear your local browsing history.
If you experience strange behavior or the latest updates don't seem to work, ask your browser to empty its cache so that the reloaded page takes into account recent changes.
Detailed procedure link for Google Chrome.
Detailed procedure link for Mozilla Firefox.