During this year's Obon holiday, I was reluctant to go out due to the declaration of a state of emergency due to the corona crisis, and I spent time maintaining physical PCs and virtual machines.
Basically, Windows 10 was launched for monthly updates, but Windows 8.x and Linux, which is used less frequently as a desktop OS, are postponed. The following phenomenon occurred during such maintenance work.
When I started up an old notebook PC that was left for operation verification after a long time, Microsoft Edge automatically started and an error message "The clock is behind" appeared. After checking the contents, the date and time of the PC is "April 12, 2021". It was executed on August 12th.
As far as I have confirmed, there is no official Microsoft support article or document for "ERR_CERT_DATE_INVALID", but it seems that the invalid date and time could lead to a security incident.
However, as you can see in the error message, it is clear that there is simply a gap of 4 months. This problem can be resolved by waiting for the Windows Time service to synchronize with the NTP server, or by following the steps below.
This is a rare error that is unlikely to occur on a PC that you use every day, so I decided to introduce it this time.
Author: Yoshikazu Akutsu
Yoshikazu AkutsuIT writer born in 1972. After working as an editorial staff for various PC magazines such as general PC magazines, DOS/V magazines, and Windows magazines, he became independent. While loving Windows and Linux, he has written many PC-related books. In recent years, not only BtoC but also BtoB solutions coverage and interviews are the main battlefield. I have been taking it every day without setting a liver-free day, but the γ-GTP level has increased sharply, and urgent action is required.
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