有时您可能想或需要知道您的Windows 安装日期^{(Windows installation date)}或您的计算机上安装 Windows 10 操作系统的日期和时间。有几种方法可以找到它，我们将在这篇文章中讨论。

Windows 安装日期

要查找 Windows 10 操作系统的安装日期：

1. 您可能会看到Windows文件夹属性
2. 检查 Windows 注册表
3. 使用systeminfo命令行工具
4. 使用 PowerShell 命令。

1]Windows文件夹属性

找出您的Windows 操作系统^{(Windows OS)}何时安装的最简单方法是右键单击Windows 文件夹^{(Windows folder)}，选择“属性”，然后在“^(Properties)常规^(General)”选项卡下查看“已创建^(Created)”前面的条目。在这里您将看到时间和日期。

但是，如果您已将 Windows 版本升级到更高版本，您将看到安装早期版本的日期，而不是安装或升级最新版本的日期。就我而言，它显示的是我第一次安装Windows 8的日期，而不是Windows 8.1的日期。

2]检查Windows注册表

Windows 安装日期^{(Windows Installation Date)}也存储在Windows注册表^{(Windows Registry)}中的以下键中，作为UNIX时间，即作为 32 位值，以自^(UNIX)1970^{(Jan 1970)}年 1 月 1 日以来的秒数显示时间。

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\InstallDate

自1970 年 1 月 1 日^{(Jan 1970)}以来，我的Windows安装时间为 1382359164 秒，因此您需要进行一些计算才能得出该数字。

3]使用^(Use)systeminfo命令行工具

查找Windows 安装日期^{(Windows Installation Date)}的最简单和最方便的方法是使用我们已经讨论过的^{(systeminfo tool,)}systeminfo 工具。^{(systeminfo tool)}要使用此内置工具，请打开命令提示符^{(command prompt)}窗口，键入以下内容，然后按 Enter^(Enter)：

systeminfo | find /i "Install Date"

您将能够看到原始安装日期^{(Original Install Date)}。

阅读^(Read)：如何找到应用程序和程序的安装日期^{(How to find the Installation date for apps and programs)}？

4]使用PowerShell命令

Windows安装日期也存储在WMI 类Win32_OperatingSystem的属性InstallDate中。您可以使用PowerShell获取安装日期和时间。

要找出日期，请以管理员身份打开^{(Administrator)}Windows PowerShell，将路径更改为 C 驱动器，键入以下内容，然后按 Enter^(Enter)：

([WMI]'').ConvertToDateTime((Get-WmiObject Win32_OperatingSystem).InstallDate)

将显示安装Windows的日期和时间！

现在阅读：^{(Now read:)} 如何找出系统正常运行时间^{(How to find out System Uptime)}。

享受剩下的一天！:)

Find out Windows Installation Date using various methods

There may come a time when you may want to or need to know yoυr Windows installation date or the date and time when your Windows 10 OS was installed on your computer. There are several ways to find this out, which we will discuss in this post.

Windows Installation Date

To find the installation date of your Windows 10 OS:

1. You may see the Windows folder Properties
2. Check the Windows Registry
3. Use the systeminfo command-line tool
4. Use a PowerShell command.

1] Windows folder Properties

The easiest way to find out when your Windows OS was installed, would be to right-click the Windows folder, select Properties and see the entry in front of Created under the General tab. Here you will see the time and date.

But if you have upgraded your Windows version to a higher version, you will see the date when the earlier version was installed and not when the latest version was installed or upgraded. In my case, it shows the day I first installed Windows 8 – and not the Windows 8.1 date.

2] Check the Windows Registry

The Windows Installation Date is also stored in the Windows Registry in the following key, as UNIX time, ie as a 32-bit value displaying the time in the number of seconds since 1st Jan 1970.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\InstallDate

My Windows was installed 1382359164 seconds since 1st Jan 1970, so you need to do some calculations to arrive at the figure.

3] Use the systeminfo command-line tool

The easiest and the most convenient way of finding the Windows Installation Date would be to use the systeminfo tool, which we have already talked about. To use this built-in tool, open a command prompt window, type the following, and hit Enter:

systeminfo | find /i "Install Date"

You will be able to see the Original Install Date.

Read: How to find the Installation date for apps and programs?

4] Use a PowerShell command

The Windows install date is also stored in the property InstallDate of the WMI class Win32_OperatingSystem. You can use PowerShell to get the date and time of installation.

To find out the date, open Windows PowerShell as Administrator, change the path to C drive, type the following, and hit Enter:

([WMI]'').ConvertToDateTime((Get-WmiObject Win32_OperatingSystem).InstallDate)

The date and time your Windows was installed will be displayed!

Now read: How to find out System Uptime.

Enjoy the rest of the day! :)

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