FAQ

Website access issues

Website is inaccessible or displays incorrectly

• Common issues and solutions for inaccessible websites

• Reasons why images display incorrectly or incompletely on a website

• A website displays the message "This page is temporarily unavailable"

• A website displays garbled text

• File uploads from the website backend fail on a Linux Cloud Web Hosting instance

• MP4 videos fail to play on a website

• A website is intermittently inaccessible

• A website displays a message indicating that it is a shell site

• Causes and solutions for inaccessible domain names or websites

• Cannot access a Discuz! forum after changing the database password

• A website becomes inaccessible after the database password is reset

• A Cloud Web Hosting website is accessible from a computer but not from a mobile phone

• Solutions for a website that is inaccessible after a Cloud Web Hosting instance is upgraded

• Solutions for a website that is inaccessible due to a cyberattack on a Cloud Web Hosting instance

• Images on a site hosted on a Cloud Web Hosting instance do not display correctly

• CGI programs on a Cloud Web Hosting instance are inaccessible

• A website is inaccessible due to high host CPU or memory usage

• Accessing a Discuz! website redirects to another page

• A website on a Linux system has layout issues in Internet Explorer

• The green security lock icon does not appear after HTTPS encryption is enabled for a website

• Cannot access a website after enabling HTTPS encryption for Cloud Web Hosting

• The CAPTCHA is not displayed on the DedeCMS logon page

• The DedeCMS logon page is blank

• User profile pictures do not display correctly on a WordPress site

• A website does not work correctly because the file or folder count is too high

A website displays an error message

• Summary of error messages displayed on websites

• A website returns an "Internal Server Error" message

• A website returns a "You don't have permission to access xxxx on this server" error

• A website returns an "HTTP Error 404.3 - Not Found" message

• A website returns an "HTTP Error 500.19 - Internal Server Error" message

• A website returns a "Warning: chmod() has been disabled for security reasons" error

• A website returns a "max_user_connections" error

• A website returns a "Class 'ZipArchive' not found" error

• A website returns a "warning: session_start()" error

• A website returns a "Parse error: syntax error, unexpected T_STRING in" error

• A website displays an "Object moved to here." message

• A website returns a "Fatal error: fatal flex scanner internal error-end of buffer missed in xxx" error

• A website returns a "Very sorry" error

• A website returns a "403 Forbidden" error

• A 301 error occurs when accessing a 404 page

• A website displays a message that it is temporarily inaccessible because the host has expired

• Solution for a website that reports a virus

• A website displays "Friendly reminder: This website is temporarily unavailable"

• A website displays "Sorry! This website may be inaccessible for the following reasons"

• A website displays "The page cannot be displayed because an internal program error occurred"

• A website displays "Cannot add duplicate collection entry of type 'add'"

• A 403 error occurs when accessing a subdirectory

• An error occurs when accessing an ASP page

• A Windows site returns an "HTTP Error 500.22 - Internal Server Error"

• A Windows site returns an "HTTP Error 500.0 - Internal Server Error"

• A Windows site returns "An error occurred on the server when processing the URL"

• A Discuz! forum returns a "Discuz! Database Error"

• An error occurs when changing a WordPress site theme

• A WordPress page returns "Cannot modify header information - headers already sent"

A website is slow or runs slowly

• Methods to troubleshoot a slow website

• Too many images cause a website to load slowly

• A website on a Windows Cloud Web Hosting instance is slow

• A website is intermittently inaccessible

• FAQ about website management

• A website based on the .NET Framework slows down

Abnormal access to a PHP website

• A PHP website displays a blank page

• A PHP site displays incorrectly

• A PHP page returns a "Warning: Cannot modify header information - headers already sent by ..." error

• A PHP website returns a "PHP Fatal error"

• A PHP site returns a "Fatal error: Incompatible file format" error

• A ThinkPHP site returns "class not found Runtime/~runtime.php"

• Installing a Discuz! forum using PHP returns "mysqlnd cannot connect to MySQL 4.1+ using the old insecure"

• How to hide PHP error messages on a Linux Cloud Web Hosting instance

• Some PHP pages on a Linux Cloud Web Hosting instance return a 404 error

FTP usage issues

FTP connection issues

• An FTP client displays "Cannot connect to server" after it sends "AUTH TLS" to a Cloud Web Hosting instance

• A "Connection refused" message is displayed when connecting to a site over FTP

• Garbled text appears when connecting to a site using FileZilla

• An error occurs when connecting to a Cloud Web Hosting instance using FileZilla

• Connecting to a Cloud Web Hosting instance using an FTP client returns a "425 Security: Bad IP connecting" error

• Solution for when connecting to FTP using Windows Explorer redirects to Internet Explorer

Abnormal FTP usage

• Creating a directory using FTP software returns a "550 Create Directory Operation Failed" error

• File size becomes 0 KB after an FTP upload

• Cannot delete directories or files on a Linux Cloud Web Hosting instance

• Cannot delete a directory over FTP on a Linux Cloud Web Hosting instance

• Uploading a website program to a Simple Application Server or Cloud Web Hosting instance returns "Fatal error: Unable to read XXXX bytes"

• Cannot upload files using an FTP client

• Error when creating a folder: 550 Create directory operation failed

• Error when creating a file: 553 could not create file

• An FTP download is interrupted

• A script file cannot be executed after it is uploaded

• The last modified time is incorrect after a file is uploaded

• Solution for slow file transfers to a Cloud Web Hosting instance using an FTP client

• How to show hidden files in different FTP clients

Website migration issues

• A ThinkPHP site displays a blank page after migration

• A WordPress site migrated to a Cloud Web Hosting instance returns a "loop redirection" error

• Importing an SQL Server backup file fails during a database migration

• A migrated website returns "System does not support: mysql" when accessed

Database issues

• Cannot import data from an older MySQL version after upgrading the database

• How to back up database data after a Cloud Web Hosting instance expires

• How to change the max_allowed_packet value for a MySQL database on a virtual machine

• The website backend returns "The database password may be incorrect or a database server error occurred!"

• Garbled Chinese characters in a Cloud Web Hosting database

• A MySQL database on a Cloud Web Hosting instance returns a "Too many connections" error

• A PHP program that calls an SQL Server database returns "Call to undefined function sqlsrv_connect()"

• Database FAQ

• Database FAQ for Windows Cloud Web Hosting

• Does the MySQL database support enabling event_scheduler?

• Importing SQL Server data returns "Cannot insert data into a read-only column"

• Failed to revert an SQL Server 2008 database

• A website program fails to call the database

• Error when importing an SQL file: unknown collation utf8mb4_unicode_ci

• Failed to connect to a database using phpMyAdmin

• Accidentally deleted a MySQL database from a Cloud Web Hosting instance

• A PHP connection to MySQL returns "cannot connect to MySQL 4.1+ using the old insecure authentication"

• Database profile paths for common third-party open source programs

Host feature issues

Configure host features

• How to set up an HTTP 301 status code on a virtual host

• How to use the mailbox feature after installing a Discuz! forum on a Cloud Web Hosting instance

• How to configure domain name resolution after changing the operating system of a Cloud Web Hosting instance

• The page displays "The token cannot be empty when changing the operating system"

• A website is inaccessible in some regions because its domain name resolves to multiple IP addresses

• Style errors occur when accessing a virtual host's temporary domain name in a third-party browser

• How to recover backed-up website data and database data for a Cloud Web Hosting instance

• How to download website access logs

• A Cloud Web Hosting site displays a file name instead of the web page

Host feature configuration fails or does not take effect

• Gzip compression does not take effect on a Cloud Web Hosting instance

• An error occurs when a .NET program on a Cloud Web Hosting instance generates a Microsoft Office file

• Changing the password for an Xiangyun or Fengyun host returns "Operation failed. Contact Wanwang customer service."

• The data scraping feature of a DedeCMS program does not work on a Cloud Web Hosting instance

• Updating an emlog template on a Cloud Web Hosting site returns "Template download failed"

• How to configure a 404 page to display a 404 status code on a Cloud Web Hosting instance

• Management Console FAQ

• The default index page of a website does not take effect

• A custom 404 error page does not take effect

• The htdocs folder cannot be found on the file manager page

• Cannot write data to a folder automatically created by a website program

• Cannot delete files using the file management feature

• Failed to compress a file

• Failed to decompress a file

• Cannot download an APK file from a URL

Resource consumption, DDoS, high traffic, upgrade, and renewal issues

• Common types of cyberattacks and recommended troubleshooting actions

• Introduction and FAQ for the Cloud Web Hosting trojan scan service

• How to protect a Cloud Web Hosting website from cyberattacks

• What to do when you receive an email that your shared Cloud Web Hosting instance is shut down due to a DDoS attack

• Causes and solutions for high website resource consumption

• Solution for high traffic consumption caused by search engine crawlers on a Cloud Web Hosting instance

• FAQ about high website resource consumption (customer program faults)

• How to use the Robots protocol to block search engines from scraping website content

• Traffic Statistics FAQ

• Can a Cloud Web Hosting instance be upgraded to an Elastic Compute Service (ECS) instance?

• How to cancel auto-renewal for a Cloud Web Hosting instance?

Product billing issues

• Billing FAQ

Website program installation issues

• A WordPress site redirects to the temporary domain name of the virtual host after installation

• What to do if you forget the administrator password for a WordPress site on a Cloud Web Hosting instance

• FAQ about installing ShopNC on a Cloud Web Hosting instance

• A Discuz! forum installation on a Cloud Web Hosting instance returns "The fsockopen function is not supported"

• An installation returns "The logreport directory is not writable"

• A ThinkPHP site returns "Template does not exist" after the operating system of the Cloud Web Hosting instance is changed

• Solution for when an installation on a Cloud Web Hosting instance fails due to insufficient disk space

Control panel issues

• Methods for Cloud Web Hosting website log analysis

• The domain name resolution status for a host is "Failed" in the console

• The statistics report page for a Cloud Web Hosting instance displays garbled text

• How to block a specific IP address

• Logging on to the host console returns a "Failed to get site space usage" error

• An error occurs when using the Discuz! cloud platform diagnostic tool