Frequently Asked Questions

I bought software six months ago but now my reference number is invalid.


Your compiler's maintenance has expired. With the initial purchase of the compiler you receive 30 days of free download rights (command-line compilers) or 60 days of free download rights (Windows IDE compilers)*. You can purchase a year of maintenance by visiting our Renewals page.

You can renew your maintenance agreement whenever you decide that you need to get the latest version of the compiler. You do not need to annually renew your maintenance agreement if you do not plan on downloading updates to the compiler during that time. You are never required to pay for time you were off maintenance.

*Note:All compilers purchased through distribution come with 30 days of free download rights.


C-Aware IDE Demo
Embedded C Learners Kit
C Workshop Compiler