A technician receives an invalid certificate error when visiting a website with port 443 enabled. Other computers on the same LAN do not exhibit this symptom. Which of the following needs to be adjusted on the workstation to fix the issue?
I think it's referring to the fact that certificates have validity ranges (issued date to expiration date) and if your computer's time wasn't in that range then your computer would see the certificate as being invalid even though technically it wouldn't be.
This is correct, date and time being incorrect do not necessarily invalidate a certificate, but its a good thing to check if a certificate is not working on only one device, and is the most likely cause of this issue.
The question says the technician is the ONLY person on the same LAN that receives an error when visiting a website with port 443 (https) enabled. Invalid certifications are signs that either the website is unsafe or that the certification has expired, and may not be safe.
UEFI boot mode: doesn't have to do with internet website certifications
Logon times: has nothing to do with invalid certifications of other websites
user access control: would limit what can be accessed, but would not explain why the user is getting an invalid certificate error
Date and Time- is the only logical answer- someone prior said, their system could have the wrong date - TLS/SSL certificates are issued for a year (or more). If the date and time is not correct on your computer/device, it won’t fall into the validity period for which the certificate has been issued. As a result, the verification will fail and an error message will be shown.
for those myself included that want to know why Date and Time is the correct answer.
according to Monzilla.org--
"Certificates for secure websites (the address begins with https://) are valid only for a certain period of time. If a website presents a certificate with validity dates that don't match the date on your computer's clock, Firefox can't verify that it is secure and will show you an error page.
Such issues can often be fixed by setting the correct date, time and time zone on your computer system. If this does not solve the problem, it could be caused by other issues, such as a misconfigured web server or an expired certificate."
LuCas12 - Security reason due to the Date and Time of the certificates do not match. Its very important for this to be correct and by security protocol you will not be able to access for any port number used. this is a protocol that happens throughout connection which keeps getting updated with new certificates. hope this helps.
I get the same error on my computer yesterday. The date and time were wrong on that old computer. I changed the date to current then everything work fine
you could aswell try scratching out ones , uac does not play apart in this in my opinion uefi boot and logon times does not change a certificate while if you ever had the incorrect date and time and try to access the net it will not work hence i feel A thats how i got to my answer
Basically if a cert is set to expire tomorrow, and your date and time is set to the day after tomorrow, the computer will be tricked into thinking the cert is expired.
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