Windows 11 Update

C21 is compatible with Windows 11 but the 24H2 update causes a warning message when logging in to C21 or switching companies that we are not able to prevent at this time. Please stop any automatic Microsoft updates unless you know they will work without issue. You must have a Pervasive license of Version 12 or higher. Your license will be noted in the Help/About window of C21 installation. If you would like to upgrade your license, please contact us at inquiry@c21accountingsoftware.com.