我已经在我的Mac上的虚拟机中运行Office 2013一年多了，但是前几天我尝试打开Word时突然收到以下错误消息：
Cannot verify license for this product
嗯(Hmmm)，我当然有执照！产品密钥是有效的，并且当我第一次安装它时它已通过Internet正常激活，所以我不确定我收到此错误的确切原因。无论如何(Anyway)，在尝试了几个可能的解决方案之后，它现在正在运行而没有弹出错误消息。在本文中，我将列出我尝试解决该问题的各种步骤，希望它对您有用。
注意：在使用 Office 2010、2013 或 2016 时，您可能会收到此消息。以下修复应该适用于您安装的任何版本的 Office。 (Note: You might get this message when using Office 2010, 2013 or 2016. The fixes below should work with any version of Office you have installed. )
方法 1 – 更改时间并重新激活
一种建议是将系统时间设置回最初安装Office的日期，然后重新输入产品密钥，激活产品，然后将时间更改回当前日期。因此，在您更改计算机上的时间后，您可以通过转到控制面板 -(Control Panel –) 程序和功能(Programs and Features)来输入产品密钥。
现在单击Microsoft Office，然后单击更改(Change)按钮。
现在，检查“输入产品密钥(Enter Product Key)”旁边的单选按钮，然后单击下一步。
现在继续找到你的Office产品密钥，它通常在包装上，然后输入到盒子里。
完成后，您可以在Office中启动任何程序并进行激活。此时，如果激活成功，您可以将时间改回当前日期和时间。即使重新启动，它也应该保持激活状态。如果没有，请继续阅读！
方法 2- 系统还原
如果Office工作正常并且突然开始出现此问题，您可以随时尝试系统还原。您可以通过单击开始(Start)并输入系统还原来进行系统还原。您还可以在此处阅读有关如何使用它的更多信息：
https://www.online-tech-tips.com/windows-vista/enable-disable-system-restore-vista/
尝试将计算机恢复到您知道Office正常工作且没有任何问题的时间。
方法三(Method 3) ——办公软件保护平台(– Office Software Protection Platform)
如果您运行的是Office 2010，则Office 2010 SP1添加了一项名为Office 软件保护平台(Office Software Protection Platform)的新服务，有时会要求您重新激活Office。您可以按照以下步骤修复它（不需要您卸载或重新安装 Office）：
1. 在搜索框中输入services.msc并停止名为Office Software Protection Platform的服务。
2. 现在转到 C:\ProgramData\Microsoft\OfficeSoftwareProtectionPlatform 并将tokens.dat(tokens.old)重命名为tokens.old(tokens.dat)。
请注意，为了查看ProgramData文件夹，您需要打开资源管理器(Explorer)并单击“组织(Organize)”按钮，然后单击“文件夹(Folder)和搜索”(Search)选项。
单击(Click)查看(View)选项卡，然后确保单击显示(Show)隐藏的文件和文件夹单选按钮。
3. 现在转到 C:\ProgramData\Microsoft\OfficeSoftwareProtectionPlatform\Cache并将cache.dat重命名为cache.old。
4. 现在重新启动计算机并打开任何Office程序。系统会要求您重新输入产品密钥，然后重新启动。再次(Again)打开任何Office程序，您可能需要再次输入密钥。然后它会要求您在线激活，然后您就可以开始了。
方法 4 – 卸载并重新安装
此时，如果您仍然遇到问题，那么您可能需要执行完全卸载并重新安装，然后重新激活Office。但是，您要执行此操作的方法是使用Microsoft FixIT工具正确卸载。确保(Make)下载与您已安装的版本相对应的版本。
https://support.office.com/en-us/article/Uninstall-Office-from-a-PC-9dd49b83-264a-477a-8fcc-2fdf5dbf61d8
您可以使用控制面板(Control Panel)卸载，但我建议使用FixIT工具，因为它确实会清除所有文件等。使用CCleaner之类的工具在卸载后清除所有遗留的注册表项也是一个好主意。此时，继续尝试使用原始CD/DVDOffice，然后激活产品。
希望上述方法之一解决了您的问题！如果没有，请在此处发表评论并提供您的设置详细信息，我们会尽力提供帮助！享受！
Fix MS Office “Cannot Verify License” Error Message
I’ve been running Office 2013 in a virtual machine on my Mac for over a year, but suddenly the other dаy when I tried to open Word, I got the following error message:
Cannot verify license for this product
Hmmm, of course I have a license! The product key was valid and it had activated fine over the Internet when I first installed it, so I wasn’t sure exactly why I was getting this error. Anyway, after playing around with a couple of possible solutions, it’s now running without the error message popping up. In this article, I’ll list out the various steps I tried to solve the issue and hopefully it will work for you.
Note: You might get this message when using Office 2010, 2013 or 2016. The fixes below should work with any version of Office you have installed.
Method 1 – Change Time & Reactivate
One suggestion was to set the system time back to the date of the original install of Office, then re-enter the product key, activate the product, and then change the time back to the current date. So after you change the time on your computer, you can enter the product key by going to Control Panel – Programs and Features.
Now click on Microsoft Office and click on the Change button.
Now, check the radio button next to “Enter Product Key” and click on Next.
Now go ahead and find your product key for Office, which is usually on the packaging and type it into the box.
After you are done, you can launch any program in Office and do the activation. At this point, if it activated successfully, you can change the time back to the current date and time. It should stay activated even after restarting. If not, keep reading!
Method 2- System Restore
If Office was working fine and all of a sudden started having this problem, you can always try a system restore. You can get to system restore by click on Start and typing in system restore. You can also read more about how to use it here:
https://www.online-tech-tips.com/windows-vista/enable-disable-system-restore-vista/
Try to restore the computer to a time when you knew Office was working without any issues.
Method 3 – Office Software Protection Platform
If you are running Office 2010, then Office 2010 SP1 added a new service called Office Software Protection Platform, which will sometime require you to reactivate Office. You can fix it by following these steps (doesn’t require you to uninstall or reinstall office):
1. Type in services.msc in the search box and stop the service called Office Software Protection Platform.
2. Now go to C:\ProgramData\Microsoft\OfficeSoftwareProtectionPlatform and rename tokens.dat to tokens.old.
Note that in order to see the ProgramData folder, you need to open Explorer and click on the Organize button and click on Folder and Search options.
Click on the View tab and then make sure to click the Show hidden files and folders radio button.
3. Now go to C:\ProgramData\Microsoft\OfficeSoftwareProtectionPlatform\Cache and rename cache.dat to cache.old.
4. Now restart the computer and open any Office program. You’ll be asked to retype your product key and then restart again. Again open any Office program and you may have to type in the key one more time. It will then ask you to activate online and you’re good to go.
Method 4 – Uninstall & Reinstall
At this point, if you’re still having issues, then you may need to perform a full uninstall and reinstall and then reactivate Office. However, the way you want to do this is by properly uninstalling using the Microsoft FixIT tool. Make sure to download the version that corresponds to what you have installed.
https://support.office.com/en-us/article/Uninstall-Office-from-a-PC-9dd49b83-264a-477a-8fcc-2fdf5dbf61d8
You can uninstall using the Control Panel, but I would recommend using the FixIT tool since it really cleans out all the files, etc. It’s also a good idea to use something like CCleaner to clear out any left-behind registry entries after the uninstall. At this point, go ahead and try to install Office again using the original CD/DVD and then activate the product.
Hopefully, one of the methods above fixed your problem! If not, post a comment here with details of your setup and we’ll try to help! Enjoy!
