Every year (if you keep your tech support contract up to date) you are sent an update to your license to extend the expiry date. If you neglect to apply the update, your license will expire and stop working.
On the computer with the license, browse to this local website: http://localhost:1947/_int_/products.html
If that page doesn't load, then the license expiring is most likely not the problem. Proceed to the "License Manager Not Working" section below.
Do you see your license listed on the website? If so, click the "Features" button to the right of the license listing.
On the resulting page, you should see either "Expired" or the date that it will expire.
If it's expired, search back through your emails for the update file and instructions on how to apply it.
If you can't find the email, contact us at email@example.com to get it resent.
On your computer, browse to this local website: http://localhost:1947/_int_/products.html
If that page doesn't load, then the license manager has stopped running.
You can try to restart it by going into the list of services running on your computer, and starting the "Sentinel LDK License Manager".
However, it is supposed to always be running so if it has stopped it may mean that there is an issue with it.
Most of these issues are resolved by simply downloading and installing the latest license manager (which will most likely be newer than the license manager that was installed with our product).
Any questions? Please contact firstname.lastname@example.org