写本文的动机在于将自己找到的解决办法分享给更多的的人。其实，MATLAB 提示许可证即将过期，如何解决？（最近才发现该链接失效）才是本文方法的提出者，自己只是将别人的东西搬了过来，意外收获了大家的喜欢，实属惭愧。希望从本文看到该方法的人可以将感谢留给原作者。由于链接失效，无法找到原作者，自己在以后分享的过程中会尽量给出原作者的ID信息，以尊重作者版权。2018年4月26日
快到双十一了，很多人的MATLAB也快到期了（MATLAB破解版的许可证文件设置的是2017年11月11日过期，破解的coder应该还没脱单吧）
出现该问题的用户在进入MATLAB时会提示如下信息：
Your MATLAB license will expire in 60 days.
Please contact your system administrator or
MathWorks to renew this license.
解决办法：
1、进入MATLAB的licenses文件夹，里面会有一个后缀为.lic的许可证文件
2、在桌面新建一个和该许可证文件同名的.txt文件，复制.lic中开头的以#开头的几行（通常为4行），继续在下方添加如下代码
INCREMENT Aerospace_Blockset MLM 99 permanent uncounted \
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ck=216 SN=888888 TS_OK
INCREMENT Aerospace_Toolbox MLM 99 permanent uncounted \
6090F0C08395D4289512 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=237 SN=888888 TS_OK
INCREMENT Bioinformatics_Toolbox MLM 99 permanent uncounted \
40E0B0406DE56D23A426 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=190 SN=888888 TS_OK
INCREMENT Cert_Kit_IEC MLM 99 permanent uncounted \
9080309041D2DCCB2B10 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=179 SN=888888 TS_OK
INCREMENT Communication_Blocks MLM 99 permanent uncounted \
80E010304ACCEEB5E0AA VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=77 SN=888888 TS_OK
INCREMENT Communication_Toolbox MLM 99 permanent uncounted \
C0003000770A1A086530 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=162 SN=888888 TS_OK
INCREMENT Compiler MLM 99 permanent uncounted 60D0C0F0DC03C2F72FF7 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=232 SN=888888 TS_OK
INCREMENT Control_Toolbox MLM 99 permanent uncounted \
6020E0B00B7ECE0893BB VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=7 \
SN=888888 TS_OK
INCREMENT Curve_Fitting_Toolbox MLM 99 permanent uncounted \
10703080061FF9DA5A81 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=229 SN=888888 TS_OK
INCREMENT Data_Acq_Toolbox MLM 99 permanent uncounted \
E0B0E0E05124CF4A1A8D VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=21 SN=888888 TS_OK
INCREMENT Database_Toolbox MLM 99 permanent uncounted \
0010D0B02CA7353F8314 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=230 SN=888888 TS_OK
INCREMENT Datafeed_Toolbox MLM 99 permanent uncounted \
40905060D1ECD939538F VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=185 SN=888888 TS_OK
INCREMENT Dial_and_Gauge_Blocks MLM 99 permanent uncounted \
A0F05070AA9AEBF40588 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=226 SN=888888 TS_OK
INCREMENT Distrib_Computing_Toolbox MLM 99 permanent uncounted \
5000D00031D2C6B89F9C VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=229 SN=888888 TS_OK
INCREMENT EDA_Simulator_Link MLM 99 permanent uncounted \
E070C0C02B4B90B5A8D0 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=205 SN=888888 TS_OK
INCREMENT Econometrics_Toolbox MLM 99 permanent uncounted \
505010F00EB1289A73BA VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=149 SN=888888 TS_OK
INCREMENT Embedded_IDE_Link MLM 99 permanent uncounted \
90E01090A9BDA4FF67D7 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=254 SN=888888 TS_OK
INCREMENT Excel_Link MLM 99 permanent uncounted E0800080FED6DF10E43F \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=207 SN=888888 TS_OK
INCREMENT Filter_Design_HDL_Coder MLM 99 permanent uncounted \
3050B02039903259577E VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=181 SN=888888 TS_OK
INCREMENT Filter_Design_Toolbox MLM 99 permanent uncounted \
3000E0B02C875CDF5823 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=239 SN=888888 TS_OK
INCREMENT Fin_Derivatives_Toolbox MLM 99 permanent uncounted \
70A010D017A8FA7CE955 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=247 SN=888888 TS_OK
INCREMENT Financial_Toolbox MLM 99 permanent uncounted \
20E050A0ACC6A69E7AEE VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=241 SN=888888 TS_OK
INCREMENT Fixed-Point_Blocks MLM 99 permanent uncounted \
E0206040ED6EF9BCCB3B VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=11 SN=888888 TS_OK
INCREMENT Fixed_Income_Toolbox MLM 99 permanent uncounted \
50E090D0C130F6416176 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=132 SN=888888 TS_OK
INCREMENT Fixed_Point_Toolbox MLM 99 permanent uncounted \
C07000703494010EF55C VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=154 SN=888888 TS_OK
INCREMENT Fuzzy_Toolbox MLM 99 permanent uncounted \
D04010B048FB8D350E4E VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=233 SN=888888 TS_OK
INCREMENT GADS_Toolbox MLM 99 permanent uncounted \
50D0900087384B51643A VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=210 SN=888888 TS_OK
INCREMENT Identification_Toolbox MLM 99 permanent uncounted \
00707080A0CC0D8FB71E VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=190 SN=888888 TS_OK
INCREMENT Image_Acquisition_Toolbox MLM 99 permanent uncounted \
50D0D0905C22130C4D2A VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=208 SN=888888 TS_OK
INCREMENT Image_Toolbox MLM 99 permanent uncounted \
B01030E0F517B496275C VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=133 SN=888888 TS_OK
INCREMENT Instr_Control_Toolbox MLM 99 permanent uncounted \
80C0505033C162F3017F VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=169 SN=888888 TS_OK
INCREMENT MAP_Toolbox MLM 99 permanent uncounted C090E0E022BD3BA852B3 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=4 SN=888888 TS_OK
INCREMENT MATLAB_Report_Gen MLM 99 permanent uncounted \
80B000B00052F620FB11 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=190 SN=888888 TS_OK
INCREMENT MATLAB_Distrib_Comp_Engine MLM 99 permanent uncounted \
804080300CB545FBECE8 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=233 SN=888888 TS_OK
INCREMENT MATLAB_Builder_for_Java MLM 99 permanent uncounted \
404040707C2CA5639DEE VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=186 SN=888888 TS_OK
INCREMENT MATLAB_Builder_for_dot_Net MLM 99 permanent uncounted \
8070E0D0FFAA645DA39D VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=255 SN=888888 TS_OK
INCREMENT MATLAB MLM 99 permanent uncounted 50E0F0D08F6CEF24CC5B \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=14 SN=888888 TS_OK
INCREMENT MATLAB_Excel_Builder MLM 99 permanent uncounted \
50106010BCBF479623D9 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=206 SN=888888 TS_OK
INCREMENT MBC_Toolbox MLM 99 permanent uncounted B05000C02F157C5BEE28 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=198 SN=888888 TS_OK
INCREMENT MPC_Toolbox MLM 99 permanent uncounted 3050206087BF1C33045E \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=203 SN=888888 TS_OK
INCREMENT Neural_Network_Toolbox MLM 99 permanent uncounted \
D0009010451EEB5A283F VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=198 SN=888888 TS_OK
INCREMENT OPC_Toolbox MLM 99 permanent uncounted 50F070404BE7E269740A \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=198 SN=888888 TS_OK
INCREMENT Optimization_Toolbox MLM 99 permanent uncounted \
E0F00030546D043DF202 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=152 SN=888888 TS_OK
INCREMENT PDE_Toolbox MLM 99 permanent uncounted 5080705081D393548E6E \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=166 SN=888888 TS_OK
INCREMENT Power_System_Blocks MLM 99 permanent uncounted \
90405000B77AC9D2CBB9 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=216 SN=888888 TS_OK
INCREMENT Qual_Kit_DO MLM 99 permanent uncounted D01010C04E05A80BCD10 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=190 SN=888888 TS_OK
INCREMENT RF_Blockset MLM 99 permanent uncounted A0A00020B1FED5C15465 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=201 SN=888888 TS_OK
INCREMENT RF_Toolbox MLM 99 permanent uncounted 90F0905068868B4A97C8 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=168 SN=888888 TS_OK
INCREMENT RTW_Embedded_Coder MLM 99 permanent uncounted \
A0D0E0C0B3978D64A1A3 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=250 SN=888888 TS_OK
INCREMENT Real-Time_Win_Target MLM 99 permanent uncounted \
300060D0E68A928A0DBC VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=208 SN=888888 TS_OK
INCREMENT Real-Time_Workshop MLM 99 permanent uncounted \
7020D04006040066FAEA VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=134 SN=888888 TS_OK
INCREMENT Robust_Toolbox MLM 99 permanent uncounted \
1040201098A2D1E80D25 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=173 SN=888888 TS_OK
INCREMENT SIMULINK MLM 99 permanent uncounted 30D05030E2F9BBB8FCC2 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=213 SN=888888 TS_OK
INCREMENT SIMULINK_Report_Gen MLM 99 permanent uncounted \
E070B070769E869B6A03 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=206 SN=888888 TS_OK
INCREMENT SL_Verification_Validation MLM 99 permanent uncounted \
C0309000FB238CC772CC VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=251 SN=888888 TS_OK
INCREMENT Signal_Blocks MLM 99 permanent uncounted \
F000A0702665C46E07FF VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=196 SN=888888 TS_OK
INCREMENT Signal_Toolbox MLM 99 permanent uncounted \
E070B0403768324D14C1 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=185 SN=888888 TS_OK
INCREMENT SimBiology MLM 99 permanent uncounted 404080202CFCE52296A3 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=187 SN=888888 TS_OK
INCREMENT SimDriveline MLM 99 permanent uncounted \
B030A0704195F94612EF VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=163 SN=888888 TS_OK
INCREMENT SimElectronics MLM 99 permanent uncounted \
F0D050A035E4883B1E9D VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=246 SN=888888 TS_OK
INCREMENT SimEvents MLM 99 permanent uncounted 30E02040EB0C922C71A0 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=216 SN=888888 TS_OK
INCREMENT SimHydraulics MLM 99 permanent uncounted \
C07090B0F394787D61B7 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=185 SN=888888 TS_OK
INCREMENT SimMechanics MLM 99 permanent uncounted \
909000103231C13BB4BB VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=148 SN=888888 TS_OK
INCREMENT Simscape MLM 99 permanent uncounted 8020D0906FAC13D095EC \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=211 SN=888888 TS_OK
INCREMENT Simulink_Control_Design MLM 99 permanent uncounted \
D09060704E819BCDDD32 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=206 SN=888888 TS_OK
INCREMENT Simulink_Design_Optim MLM 99 permanent uncounted \
6020C080F9B2D2F92E1C VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=243 SN=888888 TS_OK
INCREMENT Simulink_Design_Verifier MLM 99 permanent uncounted \
8080D0002C390CBB546E VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=196 SN=888888 TS_OK
INCREMENT Simulink_HDL_Coder MLM 99 permanent uncounted \
F05000C0108BB935AD39 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=215 SN=888888 TS_OK
INCREMENT Simulink_PLC_Coder MLM 99 permanent uncounted \
803090F0C42068269D45 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=194 SN=888888 TS_OK
INCREMENT Spline_Toolbox MLM 99 permanent uncounted \
30E0B0A014330227515B VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=112 SN=888888 TS_OK
INCREMENT Stateflow_Coder MLM 99 permanent uncounted \
2050D0B06F85F87E216B VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=199 SN=888888 TS_OK
INCREMENT Stateflow MLM 99 permanent uncounted 4030C0C01E0B917BED3F \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=223 SN=888888 TS_OK
INCREMENT Statistics_Toolbox MLM 99 permanent uncounted \
7010C05033AC51015B7C VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=178 SN=888888 TS_OK
INCREMENT Symbolic_Toolbox MLM 99 permanent uncounted \
80D09090A1ADD082F35D VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=33 SN=888888 TS_OK
INCREMENT SystemTest MLM 99 permanent uncounted B0A0A0E039DA5A2F4AA0 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=29 SN=888888 TS_OK
INCREMENT Target_Support_Package MLM 99 permanent uncounted \
207000609E1847CC5A6E VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=172 SN=888888 TS_OK
INCREMENT Vehicle_Network_Toolbox MLM 99 permanent uncounted \
00C02010ABF2A8B8152B VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=11 SN=888888 TS_OK
INCREMENT Video_and_Image_Blockset MLM 99 permanent uncounted \
107070B0AF7901361B1E VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=162 SN=888888 TS_OK
INCREMENT Virtual_Reality_Toolbox MLM 99 permanent uncounted \
B010002042F6C767442D VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=205 SN=888888 TS_OK
INCREMENT Wavelet_Toolbox MLM 99 permanent uncounted \
30C0F0800F9B41DD8577 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=238 SN=888888 TS_OK
INCREMENT XPC_Embedded_Option MLM 99 permanent uncounted \
102000905C51C5DE4BF0 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=174 SN=888888 TS_OK
INCREMENT XPC_Target MLM 99 permanent uncounted 6090B0000421BEBA6810 \
VENDOR_STRING=QQ=47399897 HOSTID=ANY ck=136 SN=888888 TS_OK
INCREMENT Sensor_Array_Toolbox MLM 99 permanent uncounted \
E0008030D7E6251042F1 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
ck=179 SN=888888 TS_OK
3、将.txt文件后缀修改为.lic，替换原有的.lic文件，Done！
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