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I'm trying to post-date my Windows 10 system by one year. I go into the Windows menu to change date and time. I press 'Change', it opens a window, I choose 2020, I press 'Change', then the clock changes to 2020 – and then it reverts to 2019 less than 30 seconds later. The system has no internet or network access, and all visible options in the window are disabled.
- “Set time automatically” is OFF
- “Set time zone automatically” is OFF
- “Adjust for daylight savings time” is OFF
How can I post-date my system clock by 1 year? Is some other piece of software altering my clock maybe, or have I encountered a flaw in Windows?
This Windows 10 system is running as a virtual machine in VirtualBox.
1Does it revert back to the current date and time if you make a small change, like setting the date to 10:10am on 10/10/19? – drivec – 2019-09-17T18:37:18.700
I tried altering it to 3 months in the future (still in the same year) and it still reverted it. – user1091162 – 2019-09-17T18:38:58.487
Have you tried running Command Prompt as an admin and trying "date 09/17/2020" ? – drivec – 2019-09-17T18:41:55.510
I tried that too (command prompt as admin) it did the same thing. Changed it for like 10 seconds, and then it reverted. I also tried changing the hour forward by just 1 hour, and it still reverted back. – user1091162 – 2019-09-17T19:00:54.377
2Have you tried changing the BIOS clock? – BloodPhilia – 2019-09-17T20:00:05.440
This computer is a virtual machine run through virtualbox. I don't see a BIOS, or if there is one, how do I access it? – user1091162 – 2019-09-17T20:22:26.840
@user1091162 Ah, knowing that it's a VM is super helpful. Give me a moment to test things to give you an answer. This may be heavily related to https://superuser.com/questions/539880/using-virtual-box-is-it-possible-to-set-your-virtual-machine-time-to-be-differen
– drivec – 2019-09-18T15:00:17.127