# Licence Error
**URL:** https://discussions.unity.com/t/licence-error/601001
**Category:** Unity Hub
**Created:** [October 10, 2015, 9:05pm UTC](https://discussions.unity.com/t/licence-error/601001 "2015-10-10T21:05:57Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@LoudasGaming](https://discussions.unity.com/u/LoudasGaming)
#### Post date: [October 10, 2015, 9:05pm UTC](https://discussions.unity.com/t/licence-error/601001/1 "2015-10-10T21:05:57Z")
So this has occured for me for a while now since I updated to Windows 10. When I start Unity 5, I get the licence error message and I can’t re-activate or anything. Everything worked fine before I upgraded to W10. I have tried to re-install Unity and even creating a new account to make it work but even that fails.
---
### Author:  [@Graham-Dunnett](https://discussions.unity.com/u/Graham-Dunnett)
#### Post date: [October 11, 2015, 8:39am UTC](https://discussions.unity.com/t/licence-error/601001/2 "2015-10-11T08:39:09Z")
When you searched and tried the described solutions did that not work?
> **[Troubleshooting the Editor](https://discussions.unity.com/threads/troubleshooting-the-editor.347502/)**
>
> We collected a few common issues users have been experiencing, we're planning to add more to help you solve your problems faster. Please visit the Troubleshooting Companion Thread to ask questions about any of these topics. Contents Click the...
---
### Author:  [@LoudasGaming](https://discussions.unity.com/u/LoudasGaming)
#### Post date: [October 11, 2015, 9:33am UTC](https://discussions.unity.com/t/licence-error/601001/3 "2015-10-11T09:33:36Z")
Thanks alot! It worked when I removed the Unity folder in ProgramData.