If you tried to register and received this error, you are logged into GMAIL.
You must user your MSUNET ID/PW to register and cannot register while logged into GMAIL.
The easiest way to accomplish this is to open a new "private window" that does not use your login or store cookies. You can then use that window to navigate to this web site and register using your MSUNET ID/PW.
How to open a private window in:
Click the Open Menu button
Click the New Private Window button
Use the resulting window to browse to the Teaching Essentials web site and register.
Close the window and your other windows will still be logged into GMAIL.
Click the Tools button
Click the Safety menu
Click InPrivate Browsing
Use the resulting window to browse to the Teaching Essentials web site and register.
Close the window and your other windows will still be logged into GMAIL.
Click the Customize and Control Google Chrome button
Click the New incognito window menu
Use the resulting window to browse to the Teaching Essentials web site and register.
Close the window and your other windows will still be logged into GMAIL.