JMeter Learning -006-could not open/create prefs root node software\javasoft\prefs at root 0x80000002 solution (Windows 7)

It's been a long time, JMeter. When you start today, you see an alert on the Startup command Line window, as shown in the warning message:

Feel a bit uncomfortable (maybe professional habits, my full-time test), and try to solve the solution, the following ideas:

1, look at the information on the command line that, when starting Jmeter, Jmeter in writing Windows 7 o'clock cannot write successfully, causing the system to throw a RegCreateKeyEx exception

2, by the warning message, Jmeter write the key value of the location: Softwar\javasoft\prefs, open the Registry Editor (Command line window input regedit, enter after the Allow), the search found that there are items HKEY_CURRENT_USER \ Softwar\javasoft\prefs and Hkey_local_machine\software\javasoft (under which there are no Prefs subkeys), are suspected because the item hkey_local_machine\software\ Javasoft\prefs does not exist, thus creating a new Hkey_local_machine\software\javasoft\prefs item

3, restart Jmeter, no above initial alarm information, to solve the problem.

Question: Follow-up I looked at it again. There is no new data generation under the Hkey_local_machine\software\javasoft\prefs key, so what does the write operation at Jmeter startup do? If any great God knows, please inform, thank you very much!

JMeter Learning -006-could not open/create prefs root node software\javasoft\prefs at root 0x80000002 solution (Windows 7)