What should I do if there is an HTTPS certificate error? Summary of common causes and handling methods

in the process of Internet access, many users will encounter security prompts popped up by the browser, among which HTTPS certificate error is a more common situation. This error will not only affect the user's normal web page access, but also may suggest that the current network environment has security risks, such as being impersonated by phishing websites, or the risk of being monitored during data transmission. This article will start with the common triggers of HTTPS certificate errors, and sort out the corresponding troubleshooting and solutions for you to help you quickly restore normal web page access, while ensuring the security of network access.

Common triggers for HTTPS certificate errors

want to solve the HTTPS certificate error, first need to clear the root cause of the error, different trigger causes correspond to different processing directions, which is the premise of efficient problem solving.

1, the certificate exceeds the validity period

HTTPS certificates have a fixed validity period, as short as 1 year, as long as 3 years. Once the validity period is exceeded, the browser will determine that the certificate is invalid, thus popping up the HTTPS certificate error prompt. This situation occurs in the scene where the website manager does not timely update the certificate, especially some small websites or personal sites, it is easy to ignore the valid period reminder of the certificate.

2, the certificate does not match the domain name

each HTTPS certificate is bound to a specific domain name, if the website changes the domain name, or the domain name filled in when the certificate application is inconsistent with the currently visited domain name, the HTTPS certificate error will be triggered. For example, the certificate originally applied for the second-level domain name, the user visits the main domain name, or the main domain name certificate cannot cover the newly added subdomains, such error prompts will appear.

3, the certificate has not been issued by a regular institution

only HTTPS certificates issued by authoritative CA organizations will be trusted by mainstream browsers. If a website uses a self-signed certificate or a certificate issued by an organization that is not trusted by the browser, the browser will determine that the certificate is invalid and pop up an HTTPS certificate error prompt. Such certificates often have security risks and may be used maliciously.

Second, the common method of handling HTTPS certificate error

when encountering an HTTPS certificate error, users can start with their own device and browser settings to troubleshoot and solve possible problems, which is the fastest way to deal with it.

1, check the system time and date

HTTPS the validity of the certificate will refer to the system time of the device. If the system time of the device deviates greatly from the current real time, it will be determined by the browser that the certificate has expired, which will trigger an HTTPS certificate error. Users can open the date and time settings of the device, check the automatic synchronization network time, ensure that the system time is accurate, and then re-visit the website to verify whether it is back to normal.

2, clean browser cache and certificate exception record

browser will cache the HTTPS certificate information of the visited website. If the browser cache is not synchronized after the certificate is updated, an HTTPS certificate error will appear. Users can enter the browser's settings interface, find the privacy and security options, clean up the browser cache and certificate-related abnormal records, then close the browser and reopen it, and then visit the target website to see if it is back to normal.

3, confirm whether the website is a regular site

If the browser prompts HTTPS certificate error, the user needs to carefully check whether the domain name of the website is correct and whether there is a spelling error to avoid entering the phishing website by mistake. At the same time, you can find the official domain name of the target website through the search engine, compare whether the current domain name is consistent, confirm that it is correct and then carry out subsequent operations to avoid falling into security traps.

3. How to handle HTTPS certificate errors on the website

if the HTTPS certificate error is caused by the problem of the website, the website manager needs to complete the corresponding certificate configuration and update operation, which is the key to solve the problem from the root.

1, timely update expired HTTPS certificate

website administrators need to regularly check the validity period of the HTTPS certificate and complete the renewal operation before the certificate expires. You can apply for renewal through the original certificate authority, or you can reapply for a new HTTPS certificate, submit the corresponding domain name verification data, and deploy the new certificate to the server after completing the application to ensure that the certificate is in a normal and valid state.

2, apply for HTTPS certificate covering the whole domain name

if there are multiple subdomains, it is recommended to apply for a multi-domain HTTPS certificate or a wild-card HTTPS certificate to ensure that all associated domains can be covered by the certificate. When applying for a certificate, fill in all the domain name information that needs to be covered accurately to avoid domain name mismatches. After deploying the certificate, verify the access status of each domain name one by one to ensure that HTTPS certificate errors do not occur again.

3, replace the HTTPS certificate issued by the regular institution

If the current certificate is a self-signed certificate, it should be replaced with the HTTPS certificate issued by the authoritative CA in time. Users can choose a free authoritative CA certificate or apply for a paid advanced certificate. After completing the application, the old certificate will be replaced to ensure that the browser can recognize and trust the current HTTPS certificate normally, and eliminate the HTTPS certificate error prompt.

Security risks and precautions for HTTPS certificate errors

HTTPS certificate error not only affects the access experience, but also may have security risks. During the processing, you need to pay attention to relevant security points to avoid falling into security traps.

1, do not skip the HTTPS certificate error prompt

some browsers will provide the option to skip the HTTPS certificate error, but this operation has great security risks and may let users enter the phishing website, resulting in the leakage of personal information. Unless you confirm the authenticity of the website, do not choose to skip the prompt to avoid unnecessary losses.

2, regularly check the HTTPS certificate status of the website

site managers should develop the habit of regularly checking HTTPS certificates, set reminders before the certificate expires to ensure that the certificate is always in a valid state. At the same time, pay attention to the security tips of the browser. Once you receive the feedback of HTTPS certificate errors, you should investigate and deal with them as soon as possible to avoid affecting the user access experience and prevent malicious institutions from exploiting certificate vulnerabilities.

To sum up, HTTPS certificate error is a common network access problem, and its triggering causes cover multiple scenarios on the client side and the website side. Users can check the system time and clean up the browser cache to solve the problem. Website managers need to pay attention to the valid period of the certificate and the matching status of the domain name. Complete the certificate update and configuration in time. At the same time, pay attention to the security risks behind HTTPS certificate errors to avoid unnecessary losses caused by negligence and protect their own network access security.