# License randomly invalid **URL:** \ **Category:** Support\ **Created:** [December 6, 2023, 5:30pm UTC](https://discuss.ampl.com/t/license-randomly-invalid/846 "2023-12-06T17:30:55Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![michael](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/michael/32/521_2.png) [@michael](https://discuss.ampl.com/u/michael)\ **Post date:** [December 6, 2023, 5:30pm UTC](https://discuss.ampl.com/t/license-randomly-invalid/846/1 "2023-12-06T17:30:55Z")
Hi all, following problem. I got an AMPL license which works perfectly fine. I am using AMPL on WIN11 and installed it with the new AMPL installer. After some time working with AMPL, I am getting a message telling me the license in invalid. (If it occurs the next time I will copy the message in this thread). I have to use the installer again to override the existing directory and enter the same exact key. Then it works again. It´s very annoying. Is this problem on anyone’s radar? ---
**Author:** ![fdabrandao](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/fdabrandao/32/63_2.png) [@fdabrandao](https://discuss.ampl.com/u/fdabrandao)\ **Post date:** [December 6, 2023, 6:18pm UTC](https://discuss.ampl.com/t/license-randomly-invalid/846/2 "2023-12-06T18:18:29Z")
Hi @michael, Thank you for reporting this issue. The next time it happens could you please send us the amplkey.log file that should be next to ampl.lic in your AMPL installation directory? ---
**Author:** ![michael](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/michael/32/521_2.png) [@michael](https://discuss.ampl.com/u/michael)\ **Post date:** [December 6, 2023, 6:57pm UTC](https://discuss.ampl.com/t/license-randomly-invalid/846/3 "2023-12-06T18:57:08Z")
I have sent it to [licensing@ampl.com](mailto:licensing@ampl.com) Thank you 🙂