1. What to do if the security certificate expires?

Analysis of common causes of security certificate expiration:

This phenomenon occurs if the date or time setting on the computer is incorrect.

Solution

To resolve this issue, follow these steps:

1. On the Apple menu, point to Control Panel , and then click Date and Time .

2. Verify that the date and time on your computer are correct. If not, adjust the necessary date and time settings.

3. Restart your computer and confirm that the date and time are still correct.

NOTE: If the date and time on your computer are correct, you may need to replace your computer battery after you restart your computer. To run the computer clock after the computer has been turned off, you want to preserve computer (CMOS) settings and the computer on battery power. To replace the battery in your computer, refer to the documentation that came with your computer, or to a certified Macintosh computer repair technician.

4. Start InterExplorer, and then try browsing to a secure Web site.

Case study: How to solve the sudden failure of website security certificate?

Question: Currently I have been using IE6, and a small problem often occurs when browsing the web. Every time I log into a website, even though I know it is a safe and secure website, a window pops up on my desktop stating that there is a security issue with the website. Security certificates are generally issued by trustworthy authorities. The web pages I browsed have corresponding valid names. However, their security certificates have either expired or become invalid. At first, this small problem only appeared occasionally and was bearable. But now, it's gotten to the point where it appears no matter which secure website I log into. Please tell me how to eliminate this problem?

Answer: This may be because the root certificate installed on your computer system has expired. The root certificate is an application used to verify other certificates (including security certificates). You can log in and download the latest version of the root certificate.

Another possibility is that your computer's "date/time" setting is wrong. For example, you are using last year's calendar. Double-click the time display in the taskbar to set the calendar to today's date. Maybe you deliberately changed the date settings on your computer in the past in order to test whether a certain software has a usage time limit, but then you forgot to adjust the date back. Don't think that the computer's "date/time" is an insignificant setting, it will cause a series of unexpected consequences

Use IE browser to open the payment webpage and it will prompt that the certificate has expired or there is a problem with the security certificate. Or what should I do if the certificate is wrong?

Please first confirm whether the date and time of your local computer system are correct. For example, it is 15:00:00 on October 4, 2012, and the date and time of the user's local computer system is 15:00:00 on October 4, 2011. Please change the date and time to the correct date and time before closing. Just log in to Tenpay via the browser again.

If the date and time are correct.

Please follow the following method to solve the problem:

1. Click "Start="Run", enter "mmc", click "Confirm" to open the console;

2. Click "File=" 》Add/Delete Management Unit";

3. Click "Add", select "Certificate" in the pop-up form, and click "Add";

4. In Certificate Management Select "My User Account" in the unit's account, click "Finish", and close the previous window;

5. Expand "Certificate" => "Trusted Root Certification Authority" => "Certificate ”, look for the “VeriSign Class 3 Primary Certification Authority – G5” certificate, and delete it if there is one;

6. Reinstall a “VeriSign Class3 Primary Certification Authority – G5” certificate, and the page will be displayed when logging in. If prompted, just click "View Certificate" and click "Install Certificate" => "Install to a Trusted Root Certification Authority".

2. What to do if the computer security certificate expires?

When this happens, we must first confirm whether the system date and time of the current local computer are accurate;

If If the current time is inaccurate, just confirm the local time information, then close the browser and log in again;

For the second method, click Start Run, enter mmc, and click Confirm and open the console;

After opening, the information of the root node of the console will be displayed, as shown in the figure;

Next, click on the file to select add/delete cells. option;

Then select the "Add" option in the next step;

A dialog box will pop up in the next step, as shown in the figure, select the "Certificate" option That's it;

After adding, select "My Account", select and click the "Finish" button;

In the next step, the certificate has been added;

Then expand Certificates--Trusted Root Certification Authority---Certificates, and then look for the "VeriSign Class 3 Primary Certification Authority – G5" certificate, and delete it if there is one;

You can reinstall a "VeriSign Class3 Primary Certification Authority – G5" certificate. There will be a prompt on the page when logging in. Just click "View Certificate", click "Install Certificate", and "Install to a Trusted Root Certification Authority". Can.

3. What should I do if the browser on my computer says that the security certificate has expired?

1. The browser prompts that the security certificate has expired or is incorrect. First check whether the computer time is consistent with the current time. If Time inconsistency may cause the browser certificate to expire.

2. After checking the current system time, start reinstalling the website certificate, press the win R key to open the run, enter "mmc", and click OK. 3. After entering the console 1 interface, click "File-gt; Add/Delete Management Unit".

4. After entering the add or delete snap-in interface, find the certificate and click Add. 5. After entering the certificate management interface, select "My User Account" and click Finish.

6. You can see that the certificate has been added to the root node of the console, click OK. 7. Click the console root node-gt; Certificate-Current User-gt; Trusted Root Certification Authority-gt; Certificate, find "Certum CA" on the right to delete it, save it after deletion, and reopen the browser as needed For the certificate website, click Install Certificate-gt according to the prompts; add/remove the snap-in and you are done.

4. What to do if the computer security certificate expires

This may be because the root certificate installed on your computer system has expired. The root certificate is used to verify other certificates (including security certificate included) application. You can log in to /support/site/update to download the latest version of the root certificate.

Another possibility is that your computer's "date/time" setting is wrong. For example, you are using last year's calendar. Double-click the time display in the taskbar to set the calendar to today's date. Maybe you deliberately changed the date settings on your computer in the past in order to test whether a certain software has a usage time limit, but then you forgot to adjust the date back. Don't think that the computer's "date/time" is an insignificant setting, it will cause a series of unexpected consequences

5. What to do if the computer security certificate expires

What should I do if my computer security certificate expires? I believe that many users have encountered the problem of expired security certificates. If the local date and time are correct, then we can reinstall the website's certificate and the problem will be solved. Recently, a win7 system user reported that he When opening a web page, it always prompts that the security certificate has expired. It is annoying every time I see it. So what should I do if the security certificate of the win7 system has expired? Today I will share with you the solution to the problem of expired security certificate in win7 system.

Solution to the expiration of the win7 system security certificate

1. Press the Windows R key to open "Run", enter "mmc", click "Confirm" to open the console; as shown in the figure Display:

2. Click "File = "Add/Delete Snap-in"; as shown in the figure:

3. Select "Certificate" in the list on the left side of the pop-up window. Click "Add"; as shown in the picture:

4. Select "My User Account" in the account of the certificate management unit and click "Finish"; as shown in the picture:

5. After there is a "Certificate" unit in the right list, click "Confirm"; as shown in the figure:

6. Expand "Certificate" => "Trusted Root Certification Authority" => "Certificate", find the certificate you need to delete in the list on the right, and then delete it; as shown in the figure:

7. When reopening the website that requires the certificate, the website will prompt that it is required To install the certificate, directly click "View Certificate" and click "Install Certificate" => "Install to a Trusted Root Certification Authority".

6. What to do if the security certificate is expired

1. Press the Windows R key to open Run (the Window key is the key between Ctrl and Alt).

2. Enter mmc and click OK to open the console.

3. Click File-Add/Remove Snap-in.

4. Select the certificate in the list on the left side of the pop-up window and click Add.

5. Select My User Account in the Certificate Management window and click Finish.

6. After there is a certificate in the list on the right, click Confirm.

7. Expand Certificates-Trusted Root Certification Authorities-Certificates, find the certificate that needs to be deleted in the list on the right, and delete it. Open the webpage that requires a certificate and click to install the certificate according to the prompts.

Extended information:

Only by applying for a merchant digital certificate can any online store participate in secure e-commerce online transactions, sell its own goods or provide services. According to the SET standard, digital certificates are confirmed step by step through a trust cascade relationship.

Each certificate is connected to the upper-level CA that signed the certificate, thus forming a tree-structured trust chain. A cardholder certificate is connected to the card issuing bank certificate (CCA), and the CCA is connected to the root CA through the brand CA. A merchant certificate is connected to the merchant CA (MCA), and the MCA is connected to the root CA through the brand CA.

7. What to do if the computer prompts that the security certificate has expired or has not yet taken effect?

If the computer prompts that the security certificate has expired or has not taken effect yet, verify whether the system time is correct. If the time exceeds An error will be reported for the authorization scope.

The solution and operation steps are as follows:

1. First, access is blocked by Internet Explorer and prompts "There is a problem with the security certificate of this website". You can click "Continue browsing this website". Website (not recommended)" as shown below.

2. Secondly, click "Certificate Error" and then click the "View Certificate" button below, as shown in the figure below.

3. Next, in the certificate window that opens, check the validity period of the certificate, and then compare it with the current year to see whether the certificate is within the validity period, as shown in the figure below.

4. Then, if it is within the validity period, please open the local time to see if the local system time setting is incorrect, and adjust the system time back to the correct time, as shown in the figure below.

5. Finally, when you open the browser again, you will no longer be prompted about the expiration of the security certificate, as shown in the figure below. In this way, the problem is solved.

8. What to do if the computer shows that the website certificate has expired

1. Turn on the computer and press the shortcut key Windows R key on the computer desktop to open the run window (the Window key is between Ctrl and Alt key); 2. Then enter "mmc" in the input box, click OK, and the console will open; 3. Then the console page will appear, and then click on the file, add/delete snap-in options; 4. In Select the certificate in the list on the left side of the pop-up window and click the Add option; 5. Select My User Account in the Certificate Management window and click the Complete option; 6. Click on the certificate option in the list on the right, and then click the Confirm option; 7. Expand Certificates-Trusted Root Certification Authorities-Certificates, find the certificate that needs to be deleted in the list on the right, delete it, and reopen the website that requires the certificate. The website will prompt that you need to install the certificate. Click directly to view the certificate and click to install the certificate. -Install to a Trusted Root Certification Authority.

9. The computer certificate has expired, how to solve it

This may be because the root certificate installed on your computer system has expired. The root certificate is used to verify other certificates (including security certificate included) application.

You can log in to /support/site/update and download the latest version of the root certificate. Another possibility is that the "date/time" of your computer is set incorrectly (Figure 1), for example , using last year's calendar. Double-click the time display in the taskbar to set the calendar to today's date.

Maybe you deliberately changed the date settings on your computer in order to test whether a certain software has a usage time limit, but later you forgot to adjust the date back. Don't think that the computer's "date/time" is an insignificant setting, it will cause a series of unexpected consequences.