A 302 redirect issue in Magento can be resolved by following these steps:
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Clear Magento Cache: Begin by clearing the cache in Magento. This can be done by going to System > Cache Management in the admin panel and clicking on the "Flush Magento Cache" button.
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Check Redirect Configuration: Verify the redirect configuration in Magento. Go to Stores > Configuration > General > Web and check the settings for "Auto-redirect to Base URL" and "Use Web Server Rewrites." Make sure they are set correctly based on your requirements.
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Check .htaccess File: Ensure that the .htaccess file in the root directory of your Magento installation is intact and not modified. You can compare it with a fresh installation of Magento or a backup of your .htaccess file to ensure it is correct.
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Check URL Rewrites: Check if there are any conflicting URL rewrites in Magento. Go to Marketing > SEO & Search > URL Rewrites in the admin panel. Look for any duplicate or conflicting redirects. Delete any unnecessary or conflicting URL rewrites.
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Check Custom Redirects: If you have custom redirects set up in Magento, review them to ensure they are correctly configured. Go to Marketing > SEO & Search > URL Rewrites in the admin panel and review your custom redirects. Make any necessary adjustments or delete incorrect redirects.
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Disable Third-Party Extensions: Temporarily disable any third-party extensions that might be interfering with the redirects. Disable the extensions one by one and check if the 302 redirect issue persists after each disablement. This will help identify if a specific extension is causing the problem.
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Test on a Default Theme: Switch to a default Magento theme, such as Luma or Blank, to determine if the issue is related to your theme or customizations. If the 302 redirect issue disappears with the default theme, you may need to review your custom theme files or consult with your theme developer for assistance.
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Debugging and Logging: Enable Magento debugging and logging to gather more information about the redirect issue. This can be done by going to Stores > Configuration > Advanced > Developer > Debug and setting "Enabled Developer Mode" to "Yes." This will generate log files in the var/log directory, which can provide insights into the redirect problem.
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Seek Technical Support: If you have followed the above steps and the issue persists, it is recommended to seek technical support from Magento experts, your hosting provider, or the community. They can help you analyze the issue further and provide specific guidance based on your setup.
Remember to take necessary precautions, such as creating backups, before making any changes to your Magento installation or configuration.