新建一个文本文档，输入横线内的内容
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RAR registration data
State Grid Corporation Of China
50000 PC usage license
UID=5827a0bd1c43525d0a5d
64122122500a5d3d56f784f3a440ac3fb632d34e08bbaa37fc7712
6acaeb8eb044810272e86042cb7c79b1da0eaf88c79f8a7c6dd77b
dba335e27a109997ac90fb0e10e4129e79f46c42b4ee1832fa5113
7443fcc1124840d4dd36f3af84a5c915a760b18c6394f938168227
fbf29edbc4b34ef85ee53fbfca71814a82afadf073876b4b033451
b6292a7cc7975b3ff3cc73404abbf7c126787344169eeae4609f62
c9ffbc159bf2640ad5d9b88f8fa9d9cbf2b7e5b022a21938465244
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保存之后重命名新建的文档为“rarreg.key”，把rarreg.key复制或剪切到winrar安装目录就好了，winrar安装目录通常情况下是“C:Program FilesWinRAR”或“C:Program Files（x86）WinRAR”