Every six months, Microsoft releases a new major Windows 10 update every six months, but Windows doesn’t immediately install them. If you’re not sure when you ran the latest update, there are a few ways to check the most recent install date of the major update.
How to check the installation date of the main update in Settings
First, open your “Start”
In the “Settings” window, click “System”.
In the “System” pane, scroll down to the bottom of the list and select “About” from the sidebar.
On the “About” page, scroll down to the “Windows specifications” section. You will find the latest install date of the major version of Windows to the right of the “Installed on” heading.
Tip: The “Installed on” date shown here only applies to major Windows updates that appear twice a year. The installation date of smaller incremental updates is not listed here. You can go to Settings> Update & security> Windows Update> View update history to see a list of the most recent minor updates that Windows has installed.
To see if you are running the latest major version of Windows 10, look at the version name, which is listed just above the “Installed on” date. Compare it to the latest version of Windows 10 and see if it matches.
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If you need to report this information to someone else, Windows provides a convenient way to quickly copy your system specifications (including the “Installed On” date) to the clipboard. To do this, click on the “Copy” button just below the “Windows Specifications” list and you can paste it into a document, an email or a message later.
Then close “Settings” and you are done.
How to check the installation date of the main update from the command prompt
You can also quickly check the latest installation date of the Windows update from the Windows command prompt. First, open a prompt by clicking the “Start” menu, typing “command” and then clicking the “Command Prompt” icon.
When the “Command Prompt” opens, type (or copy and paste) the following command and press “Enter”:
systeminfo | find "Original Install Date"
You will see the latest install date of the major version (even the install time – to the second) just after “Original Install Date” in the results that appear. When you are done, close the “Command Prompt” window.
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