I have a simple certifcate that was created using 'makecert'. In browsing I find that the certificate has expired. Is there a way to change the expiration data either through MMC or with C#? KevinKevin Burton

Hi, Thanks for the post! Changing the expiration date of a certificate is not recommended. Please contact the manufacture for the date problems. Regards, Miya This posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

It may not be recommended but this is a certificate that I have made using 'makecert'. I could just 'make another' but it would be alot less hassle if I could just change the expiration date of the existing certificate. KevinKevin Burton

I think you can make the same certification, and change the expiration date of your new ceritifcate. Try that."Everything we do is dictated by motive."

I have. If I make a new certificate then it creates a new encryption key and all encryption based on the old certificate now fail. It would be alot less work if I could just change the expiration date of the certificate that is already in use. Thank you. Kevin Burton