Unable to register Quicken for Windows: The value specified contains invalid control characters
When registering Quicken you might encounter an error "The value specified contains invalid control characters."
To prevent this error from happening make sure that your computer is set to English as the default language--other languages may insert the characters that are preventing you from logging in.
- Click on Start/Windows button.
- Click on Control Panel.
- Click on Clock, Language, and Region.
- Click on Region and Language.
- Change the Language to English (United States).
- Click Apply and OK.