Check OS Installation Dates

How to check OS install dates for quarantined statuses.

Check OS Installation Dates on Windows

1. Hold down the Windows Key and Press R on your keyboard.

2. Type in cmd and Press CTRL + SHIFT + ENTER.

3. Type in systeminfo and Press ENTER.

Check OS Installation Dates on macOS (Yosemite and El Capitan)

1. Open the console window in the Utilities folder, as outlined above.
   
   
   

2. Navigate to /var/log, then click on install.log
   
   
   

3. Scroll all the way to the top of the list, until you see a series of text that says "OSInstaller" 
   
   
   

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4. The date next to the text is the install date.

Check OS Installation Dates on macOS (Catalina and Above)

1. Open the console application found in Applications > Utilities > Console

2. In the sidebar select "Log Reports"

3. In the top half of the window select "install.log"

4. The lower half of the log window scroll up to the earliest possible date to see the install date.
   
   
   

   
   
   

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Screenshot of Console Log