Countermeasures for the loss or error of WindowXP EXE file association

This morning, I got up and watched PPL news. When I clicked the shortcut key, I accidentally mistakenly associated the exe file and changed it. Since then, after any application was running, it was always PPLIVE,
When I got bored, I calmed down and thought that assoc or registry could be recovered. (The tool-> folder option is definitely not good. There is no exe file association in it, making it worse)

1. Restart the command line tool in XP Safe mode.

C: \ Documents ents and Settings \ sqxjp> assoc <space>. exe = exefile <press enter>
Exit

2. You do not need to restart regedit.com.
First modify regedit.exe to regedit.com
Run regedit.com and find the default value under [HKEY_CLASSES_ROOT \ exefile \ shell \ open \ command]. The key value is "% 1" % *

We recommend that you do not need to restart the 2nd types.