<< Click to Display Table of Contents >> Navigation:  WinLicense > FAQ > Registration > Common > I am getting quite a few of my clients telling me that they are getting expired key messages. They tell me that they have not changed their system. What can I do to help prevent this? And what might be causing it?

A license can expire “without reasons" when you have put expiration information in a license (like days or date) and your customer turns the clock back.

 

Sometimes the customer does not turn the clock back, but it’s Windows the one that synchronizes the clock (turning it back) and WinLicense detects that clock change. To avoid that, you have to go to the Trial Settings panel and set the option "Clock Change" to "ALLOW_ONE_HOUR_BACK" or "ALLOW_ONE_DAY_BACK"