Solutions to cURL error 28 operation timed out errors encountered during WordPress update/activation

Recently, our site has been failing to verify when activating the WP Rocket plug-in, prompting "cURL error 28 operation timed out after 10000 milliseconds with 0 bytes received". Judging from the error content, it should be caused by a connection timeout. This article records what may be encountered when building a WordPress website. cURL error.

1. Introduction to cURL

cURL is a PHP library. In WordPress website building, cURL can help WordPress communicate with other sites. It usually has the following three uses:

• cURL is a software utility used by WordPress and many other web applications to send and receive data requests using URLs.
• WordPress uses cURL to handle multiple API requests.
• The cURL library plays a vital role in the background work of WordPress. If it is not configured correctly, the WordPress website will not run as normal.

2. cURL error 28 causes and solutions

cURL error 28 is usually an error encountered by servers in mainland China. The cause of the error is connection timeout. When the server in mainland China communicates with certain plug-ins (usually overseas servers), it may not be able to connect. , resulting in cURL error 28 error.

If you have never encountered this problem before, but suddenly a plug-in/theme cannot be updated or activated, the easiest way is to wait for a while and try again.

If you encounter this problem after changing the machine, or the problem still exists after waiting for a while, you can refer to the following tutorial to troubleshoot the problem one by one:

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