There are three reasons for "failed to verify the merchant's signature", 1, downloading Tenpay security certificate, and 2, downloading security certificate without payment. 3. I used to be able to pay without downloading the security certificate, but now I can't pay. Let's share with you the corresponding treatment methods of these three situations.

The first is to download Tenpay security certificate, which is very simple. Log in to Tenpay account and install it behind Security Center, Fund Protection and Digital Certificate. After the installation is completed, refresh the page and solve the problem.

The second way is to deal with the problem of "failed to verify the merchant's signature" when users download the security certificate:

Step 1: Select "Tools" in the web browser, and then select "Internet Options".

Step 2: In the general options, delete Cookies, delete files (including: deleting all offline content is optional) and clear history. Finally, click OK to exit.

Step 3: Enter Tenpay account, click Manage after Security Center, Fund Guarantee and Digital Certificate, and delete the certificate in the pop-up dialog box.

Step 3: Return to the web browser, select Tools, then Internet options, contents and certificates, and delete the certificate in the certificate dialog box that pops up. Click Close, then click OK to exit.

Step 4: After the above three steps are completed, turn off the router power 1 and restart it after 2 minutes. This will solve the problem.

Third, it used to be possible to pay without downloading a security certificate, but now it's not working. It is also very simple to solve.

Step 1: Select "Tools" in the web browser, and then select "Internet Options".

Step 2: Click "Delete Cookies" in the general options, click "Delete files" (where: deleting all offline content is optional), and click "Clear history". Finally, click OK to exit. Turn off the router 1 and restart it after 2 minutes. This will solve the problem.

Some people may wonder, downloading the certificate is for security, so what does it mean to remove the certificate? The reason for deleting the certificate is because the IP address of the downloaded certificate is the IP address assigned to you by your network provider at that time. The certificate defaults to the IP address service. After a period of time, the network provider will assign you a new IP address again. At this time, although your certificate has not expired, it is also because of the change of IP address, "verification of merchant signature failed."

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