If you have your administrator's help, you can decrypt all of your user data, then be able to logon to the computer again. Solution 2-9: Verify if your Smart Card service is started look here for instructions.
Please follow guidance here to update / downgrade your CAC reader.
Windows 7 (64 bit) users who have the IO Gear GSR-202 CAC reader [and are having problems with the reader not staying in device manager after the computer is restarted] should Install the driver from IOGear then restart the computer to fix the problem.
Read more about new features in What's new and improved in Office.
Read about the channel releases in Overview of update channels for Office 365 Pro Plus and learn about managing updates for users in your organization in the Change management for Office 365 clients model.
You will need to request a regular account for the Do D organization.