# Why can't I activate PyroSim?

How to move a license to a new computer

Fill out license transfer request document, and email it to support@thunderheadeng.com. Thunderhead Engineering then makes the transfer and sends you a new license file.

How to reactivate a license after reformatting a computer or changing hardware components

Either of these actions change the computer identification information and it's similar to transferring a license to a new computer.

What to do with the License Copy Error "Could not copy license file to Local License folder."

The "Application Data" folder must be junctioned to the C:\ProgramData folder. Test and fix your Application Data junction with the following instructions:

1. To open a shell window, type cmd.exe in the Windows "search" box
2. To navigate to the ProgramData folder, type the following and press enter.
cd C:\ProgramData
3. To list junction points in the directory, enter the following text.
dir /aL
4. You should see "Application Data" in this list. If it’s missing, you can remove any bad junction, and create the good one with the following two commands.
rmdir "Application Data"
mklink /j "Application Data" C:\ProgramData