Warning: Registered ARM Compiler ignored, Version needs to be 5 or higher. Path: 'ARMCC'!

打开kelil出现Warning: Registered ARM Compiler ignored, Version needs to be 5 or higher. Path: 'ARMCC'!这样的提示,要点2次确定才能结束。

按ctrl+f7会通过.按F7编译也不通过,错误提示:
Build target 'Target 1'
assembling startup_stm32f40_41xxx.s...
startup_stm32f40_41xxx.s: Error: A9517E: Parsing error: Info GenerationDate specifies date which is in the future (C:\Keil_v5\ARM\ARMCC\sw\mappings\armcompiler.elmap:10)
startup_stm32f40_41xxx.s: Error: A9517E: Parsing error: Info GenerationDate specifies date which is in the future (C:\Keil_v5\ARM\ARMCC\sw\mappings\armcompiler.elmap:10)
startup_stm32f40_41xxx.s: Product: unknown
startup_stm32f40_41xxx.s: Component: unknown
startup_stm32f40_41xxx.s: Tool: ArmAsm [4d0efa]
"..\OBJ\TEST.axf" - 2 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed:  00:00:01

 

原因：系统时间不对。