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[WINDOWS] View Windows install date even if many updates

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Moderat de TRaP, TonyTzu

Mrrrr
AdMiN
Postari: 2388

The systeminfo command gives you all sorts of details about your computer.

Open a Command Prompt and run:

Windows 8
systeminfo | find /i "Original"

For Windows 7, Windows XP:
systeminfo | find /i "install date"

_______________________________________

TRaP
Moderator
Postari: 960

systeminfo | find /V /I "hotfix" | find /V "KB"

This gives you systeminfo without the hotfixes and works really well in a batch that loops through logging everything.

Source:
https://serverfault.com/questions/44671 ... on-windows

TRaP
Moderator
Postari: 960

Source:
https://stackoverflow.com/questions/170 ... of-windows

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\InstallDate

It's given as the number of seconds since January 1, 1970.

To convert that number into a readable date/time just paste the decimal value in the field "UNIX TimeStamp:" of this Unix Time Conversion online tool - http://www.onlineconversion.com/unix_time.htm

TRaP
Moderator
Postari: 960

Source:
https://stackoverflow.com/questions/170 ... of-windows

In Windows PowerShell script, you could just type:

PS > $os = get-wmiobject win32_operatingsystem
PS > $os.ConvertToDateTime($os.InstallDate) -f "MM/dd/yyyy"

TRaP
Moderator
Postari: 960

As an alternative, CoastN proposes in the comments:

As the system.ini-file stays untouched in a typical windows deployment, you can actually get the install-date by using the following oneliner:

(PowerShell): (Get-Item "C:\Windows\system.ini").CreationTime

TRaP
Moderator
Postari: 960

You can also check the check any folder in the system drive like "windows" and "program files". Right click the folder, click on the properties and check under the general tab the date when the folder was created.

TRaP
Moderator
Postari: 960

I know the install date in my case in 30.05.2014 and to see which files / folders still have that date after all these years, I checked the Program Files and Windows folders and found:

- C:\ - hidden operating system files (must first unhide from Organize - Folder and search options - View)
(folder) Recovery

- Program Files (x86)
(folder) Windows Defender
(folder) Intel Corporation
(folder) NVIDIA Corporation
(folder) Realtek
(folder) Lenovo

- Program Files
(folder) Windows Defender
(folder) Intel
(folder) WinRAR
(folder) Lenovo
(folder) NVIDIA Corporation
(folder) Realtek
(folder) Synaptics

- Windows
IE11_main.log
IE10_main.log
IE9_main.log
DPINST.LOG
Synaptics.log
(folder) Help
(folder) Migration

- Windows - System32
wextract.exe
taskhost.exe
iexpress.exe
imgutil.dll
url.dll
some more dll and exe files

Converting the decimal value of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion
to a date using http://www.onlineconversion.com/unix_time.htm
also led me to the same result: Fri, 30 May 2014 15:27:11 GMT

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