To prevent Chrome from automatically updating on Mac, it can be done by disabling update services, modifying permissions, and restricting network access. 1. Use terminal commands to disable the GoogleSoftwareUpdate daemon to prevent background updates; 2. Modify update directory permissions to prevent Chrome from starting the update process by itself; 3. Restrict Chrome's outbound network connection through system firewall or third-party tools to further eliminate update requests. Using these methods in combination can effectively prevent Chrome from being automatically updated.

When Chrome spelling check fails, you can troubleshoot and fix it by following the following steps: 1. Confirm that the "Use Spelling Check" function is enabled and check whether the corresponding language is enabled in the language settings; 2. Adjust the input language order, delete the redundant language, and ensure that the main language enables spelling check; 3. Close possible conflicting extensions, especially syntax or translation plug-ins; 4. Update Chrome to the latest version and check the operating system updates. If it still doesn't work, try resetting Chrome settings.

To add multiple users, click the avatar in the upper right corner to select "Add" or "Manage other users", add an account or create a guest account, and after setting it, you can use their respective bookmarks, history and extensions independently. Each user data is completely isolated, including passwords, plug-ins, automatic filling information, etc. To delete a user, go to Settings > Profile, select a user and click "Remove from this device", or you can also modify the user name and avatar for identification at any time.

To let Chrome download directly instead of opening it when clicking on the PDF link, 1. Enter chrome://settings/content/pdfDocuments to check "DownloadPDFfilesinsteadofautomatically opening theminChrome"; 2. Check whether there are plug-ins such as Lightpdf or Smallpdf interfering behavior, you can try to disable the test; 3. You can use the developer tools to copy the link and paste the new tag to trigger the download. The above methods can be selected according to the situation.

To clear the HSTS cache in Chrome, visit the chrome://net-internals/#hsts page, find the "Deletedomainssecuritypolicies" section, enter the target domain name and click "Delete". 1. Open Chrome's HSTS management page; 2. Enter the domain name in "Deletedomainsecuritypolicies" and delete it; 3. Test whether it is successful and try to access the website through http://. Note: This operation only deletes the HSTS rules for specific domain names. If you revisit the website via HTTPS, the browser may enable HSTS again. For inaccessible

The main reason Chrome does not open the mailto: link directly in Gmail is that the default mail client is not set correctly or Gmail is not registered as an application that handles the mailto: protocol. Solutions include: 1. Set Gmail as the default mail application in Windows settings; 2. Enable Gmail protocol processing permissions in Chrome and set as default; 3. Manually click on the mailto: link to contact the Gmail registration protocol; 4. Use Chrome plug-in such as Mailto:forGmail to force jump. In most cases, it can be solved through system and browser settings, and the plug-in can be used as a backup solution.

The problem of Chrome automatically popping up new tabs is usually caused by malicious extensions, advertising scripts, or browser hijacking. The solutions are as follows: 1. Check and uninstall suspicious extensions, especially ad-class plug-ins; 2. Clear browser caches and cookies to eliminate data corruption; 3. Check whether the homepage and default search engine settings have been tampered with and manually corrected; 4. Use antivirus software such as WindowsDefender or Malwarebytes to scan and clear potential malware; 5. Finally, try resetting Chrome settings to restore the default configuration. Troubleshooting in this order can effectively solve most abnormal labeling problems.

The problem of Chrome sync stuck can be solved through the following steps: 1. Check the network connection and Google account status to ensure normal access; 2. Log out and log in to the Chrome account again; 3. Clear the synchronized data and restart the browser; 4. Reset Chrome settings; 5. Try the traceless mode or new user profile. Sequentially checking can effectively restore the synchronization function.