是多重激活了，把激活码失效的删除即可
1、以管理员权限打开cmd（必须以管理员权限，不然无法删除无效的激活码）2、输入命令：cd C:\Program Files (x86)\Microsoft Office\Office16（目录的路径根据实际安装情况输入）命令说明：切换到C:\Program Files (x86)\Microsoft Office\Office16此目录面板会显示如下说明切换目录成功：C:\WINDOWS\system32>cd C:\Program Files (x86)\Microsoft Office\Office163、再输入命令：cscript OSPP.VBS /dstatus命令说明：查看office激活信息面板会显示如下（隐藏部分用问号代替）【命令提示符中可以进行复制粘贴操作】Microsoft (R) Windows Script Host Version 5.812版权所有(C) Microsoft Corporation。保留所有权利。---Processing-----------------------------------------------------------------PRODUCT ID: ？？？？？-？？？？？-？？？？？-？？？？？SKU ID: ？？？LICENSE NAME: Office 16, Office16ProPlusR_Grace edition（具体版本）LICENSE DESCRIPTION: Office 16, RETAIL(Grace) channel （Retail为零售版，VL为批量授权）BETA EXPIRATION: 1601/1/1LICENSE STATUS: ---NOTIFICATIONS---ERROR CODE: 0xC004F009ERROR DESCRIPTION: The Software Licensing Service reported that the grace period expired.Last 5 characters of installed product key: BTDRB ---------------------------------------PRODUCT ID: ??????SKU ID: ??????LICENSE NAME: Office 16, Office16ProPlusVL_KMS_Client editionLICENSE DESCRIPTION: Office 16, VOLUME_KMSCLIENT channelBETA EXPIRATION: 1601/1/1LICENSE STATUS: ---OOB_GRACE---ERROR CODE: 0x4004F00C （这个是打开office左下角出现的错误代码）ERROR DESCRIPTION: The Software Licensing Service reported that the application is running within the valid grace period.REMAINING GRACE: 4 days (6686 minute(s) before expiring) （打开office提示剩余天数4天）Last 5 characters of installed product key: WFG99 （这个是激活码的后五位,重点在这里，记住这个“WFG99”，每个人的不一样，自己看自己的后五位是多少）Activation Type Configuration: ALLDNS auto-discovery: KMS name not availableActivation Interval: 120 minutesRenewal Interval: 10080 minutesKMS host caching: Enabled---------------------------------------PRODUCT ID:？？？SKU ID: ？？？LICENSE NAME: Office 16, Office16ProPlusR_Retail editionLICENSE DESCRIPTION: Office 16, RETAIL channelBETA EXPIRATION: 1601/1/1LICENSE STATUS: ---OOB_GRACE---ERROR CODE: 0x4004F00CERROR DESCRIPTION: The Software Licensing Service reported that the application is running within the valid grace period.REMAINING GRACE: 20 days (28940 minute(s) before expiring)Last 5 characters of installed product key: 722QV ---------------------------------------------------------------------------------Exiting-----------------------------4、最后输入此命令删除多余的激活信息：cscript ospp.vbs /unpkey:WFG99（有提示剩余天数那一栏的激活码）面板会显示如下即删除成功Microsoft (R) Windows Script Host Version 5.812版权所有(C) Microsoft Corporation。保留所有权利。---Processing-----------------------------------------------------------------Uninstalling product key for: Office 16, Office16ProPlusVL_KMS_Client edition<Product key uninstall successful>------------------------------------------Exiting-----------------------------5、再此打开office，没有提示快过期的窗口了