# Chromium Certificate Error

There are several solutions out there for when Chromium complains about connection not private. Commonly, you can click advanced and then proceed anyway. However, sometimes there’s a problem with your SSL security certificates. I’ll briefly cover some solutions here.

### Date and Time:

Simply check your system’s date and time ala

$date specifically, check the year and, if needed correct with $ timedatectl set-time YYYY-MM-DD

This is probably the most common response if you were to Google “chromium connection not private” or the error code NET:ERR_CERT_COMMON_NAME_INVALID / NET:ERR_CERT_AUTHORITY_INVALID.

While this has worked for me in the past, this was to no avail with my current case. In fact, there was not even a proceed anyway option. So, let’s continue…

### Manually Update Certificate:

1. Click on the certificate warning, it should pop up a lot of information about the certificate.
2. Highlight the certificate from where it states ---BEGIN CERFICATE--- through the end. Then, copy it to your clipboard.
3. Paste that to a file such as ~/chromium.crt
4. $certutil -d sql:$HOME/.pki/nssdb -A -t P -n chromium_cert -i ~/chromium.crt

5. Restart chromium

This did work for me. See original solution source on superuser.com.