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Google Chrome Error Code: NET::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED

Method 1: Update Google Chrome

First make sure you’re in Google Chrome.
Open this link here: chrome://settings/help.
Google Chrome will automatically scan for new updates and will ask to update if any new update is available.

Method 2: Update Date and Time

For this method it will depend on which type of computer and operating system you use.
If you need help updating your Date and Time for your computer visit this link here: https://www.helpcloud.com/?hcs=update%20date%20and%20time

Method 3: Clearing SSL Certificate Cache

Clearing SSL cache can help you to repair the ERR_CERTIFICATE_TRANSPARENCY_REQUIRED or any other SSL related errors.

Press your Windows key and type: Internet Options
Go to Content tab, then click on “Clear SSL state” then at the bottom of the window select “OK”.

Last Resort- For Advanced Users Only

Method 4: Disable Certificate Transparency enforcement for a list of URLs

Data type:
List of strings Android:string
Windows registry location for Windows clients:
SoftwarePoliciesGoogleChromeCertificateTransparencyEnforcementDisabledForUrls
Windows registry location for Google Chrome OS clients:
SoftwarePoliciesGoogleChromeOSCertificateTransparencyEnforcementDisabledForUrls
Mac/Linux preference name:
CertificateTransparencyEnforcementDisabledForUrls
Android restriction name:
CertificateTransparencyEnforcementDisabledForUrls
Supported on:
Google Chrome (Linux, Mac, Windows) since version 53
Google Chrome OS (Google Chrome OS) since version 53
Google Chrome (Android) since version 53
Supported features:
Dynamic Policy Refresh: Yes, Per Profile: No
Description:
Disables enforcing Certificate Transparency requirements to the listed URLs.

This policy allows certificates for the hostnames in the specified URLs to not be disclosed via Certificate Transparency.
This allows certificates that would otherwise be untrusted, because they were not properly publicly disclosed, to continue to be used, but makes it harder to detect misissued certificates for those hosts.

A URL pattern is formatted according to https://www.chromium.org/administrators/url-blacklist-filter-format.
However, because certificates are valid for a given host name independent of the scheme, port, or path, only the hostname portion of the URL is considered. Wildcard hosts are not supported.

If this policy is not set, any certificate that is required to be disclosed via Certificate Transparency will be treated as untrusted if it is not disclosed according to the Certificate Transparency policy.

Example value:
Windows (Windows clients):
SoftwarePoliciesGoogleChromeCertificateTransparencyEnforcementDisabledForUrls1 = ”example.com”
SoftwarePoliciesGoogleChromeCertificateTransparencyEnforcementDisabledForUrls2 = ”.example.com”
Windows (Google Chrome OS clients):
SoftwarePoliciesGoogleChromeOSCertificateTransparencyEnforcementDisabledForUrls1 = ”example.com”
SoftwarePoliciesGoogleChromeOSCertificateTransparencyEnforcementDisabledForUrls2 = ”.example.com”
Android/Linux:
[
”example.com”,
”.example.com”
]
Mac:

example.com
.example.com