> For the complete documentation index, see [llms.txt](https://docs.parallels.cn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.cn/pdfm-20-ug-zh_cn/parallels-desktop-for-mac-20-yong-hu-zhi-nan/an-zhuang-huo-sheng-ji-parallels-desktop/sheng-ji-parallels-desktop.md).

# 升级 Parallels Desktop

如果您已安装旧版 Parallels Desktop，请按照以下步骤操作来升级到 Parallels Desktop 19。

1. 否则，请从 Parallels 在线商店 (<https://www.parallels.cn>) 购买并下载“Parallels Desktop 19 for Mac 升级版”。

   产品激活密钥会发送至您提供的电子邮件地址。
2. 如果 Parallels Desktop 已打开，请先退出 Parallels Desktop。
3. 按照屏幕上的说明示安装 Parallels Desktop 19。查看**安装 Parallels Desktop**。

   安装过程中，较早版本的 Parallels Desktop 会自动从电脑中移除。
4. 打开 Parallels Desktop，然后输入升级版产品激活密钥。

   如果您使用的是试用版 Parallels Desktop，或者您购买了旧版本但尚未在电脑中安装，系统也会提示您输入这个版本的完整密钥或升级密钥。

### **故障排除**

如果您在升级 Parallels Desktop 时遇到任何问题，您可以在 <https://www.parallels.cn/products/desktop/support/> 中找到故障排除信息。


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