• 第一步：打开matlab安装路径中的license文件夹，删除其中的lic文件

• 第二步：更换新的license.lic文件

• 第三步：重新打开matlab

搞定！

license.lic文件的内容是：

%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCREMENT Aerospace_Blockset MLM 99 permanent uncounted \
A05070F00D1EB1F92326 VENDOR_STRING=QQ=47399897 HOSTID=ANY \
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=