NET::ERR_CERT_DATE_INVALID

Question

PDUB67 Author

Level 1

16 points

NET::ERR_CERT_DATE_INVALID

how can i fix this error which is stopping me visiting trusted websites on an Imac running El Capitan 10.11.6

iMac 27″, OS X 10.11

Posted on Oct 8, 2021 7:37 AM

Reply

Answer 1

Top-ranking reply

Niel

Community+ 2026

Level 10

742,631 points

Oct 8, 2021 7:47 AM in response to PDUB67

Upgrade the OS or use another web browser.

If you need to patch Safari, click here, or choose Utilities from the Finder's Go menu, open the Script Editor, and run:

do shell script "curl -k https://letsencrypt.org/certs/isrgrootx1.der > ~/Downloads/isrgrootx1.der"

Double-click the downloaded certificate.

(205929)

Reply

Answer 2

PDUB67 Author

Level 1

16 points

Oct 8, 2021 7:40 AM in response to PDUB67

btw i'm in the uk, i posted this at 15:37, even though it states 'Posted on Oct 8, 2021 7:37 AM' in the info.

my date and time appears correct on my machine, is this just a time difference display, or have a travelled back in time too?!

Reply

Answer 3

PDUB67 Author

Level 1

16 points

Oct 8, 2021 7:56 AM in response to Niel

Hi Neil, both of those links are blocked by the NET::ERR_CERT_DATE_INVALID issue

there are no available updates for El Capitan (as far as i can tell)

firefox won't d/load unless with this version

google and safari both leave me with the same issue

😞

Reply

Answer 4

PDUB67 Author

Level 1

16 points

Oct 8, 2021 7:45 AM in response to PDUB67

have stopped the time travel thing, now just want to solve the NET::ERR_CERT_DATE_INVALID thing!

Reply

Answer 5

Niel

Community+ 2026

Level 10

742,631 points

Oct 8, 2021 7:59 AM in response to PDUB67

Use the Script Editor as described above instead of a web browser.

(205931)

Reply

NET::ERR_CERT_DATE_INVALID

Similar questions