爲什麼我的MATLAB激活成功後打開還是激活界面

mark一下，今天是2017-11-13，星期一，打開matlab一下，出現以下界面：

怎麼突然提示需要激活呢？然後使用之前安裝的matlab license文件，提示激活已完成，如下圖所示：

但是，點擊“完成”按鈕後，matlab即退出了。重新打開matlab程序，依然提示要激活，好暈啊~~~~~~

上網一搜，好多遇到這個情況的，在http://tieba.baidu.com/p/4412139066貼吧上找到了解決方案。

把系統時間更改到2017-11-11之前就可以了，比如2017-11-10，就可以成功的打開matlab了。在打開matlab後，發現有提示語句，如下截圖：

暫時可以使用了。但總覺得更改系統時間不可取，有沒有其他方法呢，能不能更改license呢？網上大牛很多，果然有人做到了，打開license文件，不更改和刪除任何原有內容，將以下文字複製和粘貼在license.lic文件的末端，然後保存爲擴展名爲.dat的文件。重新進行一次激活，選中修改後的.dat文件，這時候激活成功。再次打開matlab時，就算系統時間沒有更改到2017-11-11之前，matlab也是可以正常使用的。

該部分修改轉載來源於：http://blog.csdn.net/liyanzhong/article/details/78517693，非常感謝。

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以上綠色字體是需要複製和粘貼到.dat文件中的。

至此，這個2017-11-11的“詛咒”就可以解除了。

又可以繼續使用和工作了。