What should I do if the webpage certificate is wrong? Detailed reasons and handling methods

in the process of browsing a web, many users have encountered web certificate error prompts, which often directly block normal web page access, and may also make users worry about whether there are security risks. In fact, there are many reasons for the emergence of web certificate errors, which may be the security certificate problem of the web page itself, or the abnormal browser or system settings of the user. This article will deeply disassemble the incentives of web certificate errors, and give targeted treatment methods to help you quickly solve such problems and restore a safe and smooth web page access experience.

What are the common causes of web certificate errors?

to solve the webpage certificate error, first of all, we need to clarify its triggering reasons. Different reasons correspond to different processing methods.

1, the security certificate has expired or not valid

web security certificates have a fixed valid period. Once the valid period is exceeded, the browser will determine that the certificate is invalid and trigger the web certificate error prompt. In addition, some newly deployed certificates may not have reached the effective time, and will also be recognized by the browser as abnormal certificates, preventing users from accessing the web page.

2, certificate and access domain name do not match

each security certificate corresponds to a specific domain name, if the user accesses the domain name and the domain name bound to the certificate are inconsistent, such as using the second-level domain name to access but the certificate only covers the main domain name, or the entered domain name has a spelling error, the browser will pop up the wrong page certificate reminder, in order to avoid the risk of phishing websites.

3, the system time and certificate time do not match

the browser to verify the security certificate, the local system time will be compared with the valid period of the certificate, if the user's computer system time setting error, such as the year deviation is too large, it will cause the browser to misjudge the certificate has expired or not effective, and then trigger web certificate error.

Second, how to preliminarily troubleshoot and verify web certificate errors?

encounter a web certificate error, don't rush to adjust the settings, through simple troubleshooting steps, you can quickly locate the root cause of the problem and avoid useless operations.

1 View the details of the certificate

on the error prompt page of the browser, you can generally find the entrance to view the certificate information. After clicking, you can see the valid period of the certificate, the bound domain name, the authority, etc. Through this information, you can directly determine whether the certificate has expired, the domain name does not match or other problems, and provide a basis for subsequent processing. This is the key first step in troubleshooting web certificate errors.

2, test other devices or browser access

If only the current device or browser has a web certificate error, you can change a device or switch to another browser to try to access. If other devices can access normally, it means that the problem lies in the settings of the current device; if all devices cannot access, there is a high probability that there is a problem with the certificate of the web page itself. At this time, the user does not need to adjust the local settings and wait for the website operation and maintenance personnel to fix it.

Third, the client page certificate error handling method?

If it is determined after troubleshooting that the web certificate error is caused by the client settings, the problem can be solved by adjusting the local settings. The following are several practical solutions.

1, correct the local system time

if it is the error of the web certificate caused by the system time deviation, just adjust the system time of the computer to the current exact time. You can manually set the year, month, day and time, or you can turn on the function of automatically synchronizing the network time to ensure that the system time is consistent with the network time, so that the browser can normally verify the valid period of the certificate.

2, adjust the browser's security settings

the security level of some browsers is set too high, it may misjudge the normal security certificate and cause the webpage certificate error. At this time, you can enter the browser's settings page, find the security settings option, reduce the security level appropriately, or add the target webpage to the list of trusted sites, let the browser allow the certificate of the webpage to pass the verification.

3, clear browser cache and certificate cache

old certificate information cached by the browser may conflict with the new certificate of the current webpage, which can trigger a webpage certificate error. You can go to the privacy settings page of the browser, clear the browsing history, cached files and cached data related to the certificate, and then restart the browser to try to access the target webpage. In most cases, this kind of cache problem can be solved.

Fourth, the web page certificate error repair method?

if it is confirmed after troubleshooting that the web certificate error is the certificate problem of the website itself, ordinary users cannot directly repair it, but they can understand the solution logic of such problems and avoid similar problems when building a website by themselves.

1, reapply or renew security certificates

for expired or not valid certificates, website operation and maintenance personnel need to re-apply to the regular certificate authority for a new security certificate, or extend the valid period of the existing certificate. When applying, make sure that the domain name information filled in is accurate to avoid web page certificate errors caused by domain name mismatch.

2 Confirm the binding relationship between the certificate and the domain name

If the web certificate error caused by domain name mismatch, you need to check whether the bound domain name of the certificate covers all the domain names that need to be accessed, such as whether it contains all second-level domains. If the certificate only supports the main domain name, and the user needs to access the second-level domain name, you need to apply for a security certificate that supports multiple domains, or apply for a separate certificate for the second-level domain name.

sum up, the reasons for web certificate errors cover many aspects of the web and the user, from the valid period of the certificate itself, the matching degree of the domain name, to the system time of the user, and the browser settings may cause problems. By viewing the certificate information and changing the device test, you can quickly locate the root cause, and then adjust the system time according to the specific situation, clear the cache or wait for the website to repair the certificate, you can effectively solve the web certificate error and restore the safe web page access experience.