In this blog, we\u2019re sharing 7+ real-world installation headaches<\/b> we\u2019ve faced\u2014and more importantly, how you can avoid them<\/b> when setting up your PrestaShop store.<\/p>\n
Whether you’re a developer, merchant, or agency, this article will walk you through PrestaShop installation problems, fixes, and tips<\/b> based on actual hands-on experience.<\/p>\n1. Is Your Hosting Even Ready for PrestaShop?<\/b><\/h2>\n
Let\u2019s start with the basics. Not every hosting environment is PrestaShop-friendly, even if the host says it supports PHP and MySQL.<\/p>\n
Many times, the issues we faced weren\u2019t with PrestaShop itself, but with underpowered or misconfigured servers.<\/p>\n
Minimum Server Requirements for PrestaShop (as of 2025):<\/p>\n
- \n
- PHP 7.4 or 8.x<\/li>\n
- MySQL 5.6+ or MariaDB<\/li>\n
- Apache 2.4+ or NGINX<\/li>\n
- 64MB+ memory limit (preferably 128MB or higher)<\/li>\n
- Enabled extensions: PDO, cURL, GD, OpenSSL, Zip, Mbstring, DOM<\/li>\n<\/ul>\n
\ud83d\udca5 We once faced a 500 Internal Server Error, only to discover that PHP\u2019s intl extension was missing!<\/p>\n
\ud83d\udca1 TIP:<\/p>\n
Before you upload PrestaShop, run a server compatibility check using PrestaShop\u2019s system requirements script or consult your host. Shared hosting often lacks necessary flexibility.<\/p>\n
2. Why Did the Installation Page Just Freeze?<\/b><\/h2>\n
Everything was uploaded, we hit the \/install URL… and then it froze. No error message. No logs. Just a blank stare.<\/p>\n
This is one of the most common PrestaShop installation issues<\/b>\u2014and one of the most frustrating. The causes? Often a mix of:<\/p>\n
- \n
- Incorrect file permissions<\/li>\n
- Server timeout<\/li>\n
- Incomplete upload (especially via FTP)<\/li>\n
- Memory limit exhaustion<\/li>\n<\/ul>\n
In one case, an unzipped file got corrupted<\/b>, and it took us hours to realise that only half of \/classes\/ made it to the server.<\/p>\n
\ud83d\udca1 TIP:<\/b>
\n<\/b> Always upload PrestaShop using SFTP or SSH<\/b>, and double-check the file count<\/b> against the original ZIP before beginning installation.<\/p>\n3. Did We Choose the Right PrestaShop Version?<\/b><\/h2>\n
Yes, versioning matters. Installing the latest version isn\u2019t always the best idea, especially if you\u2019re planning to use older add-ons or themes.<\/p>\n
We\u2019ve learned (the hard way) that theme and module compatibility often lags behind major releases.<\/p>\n
For example:<\/p>\n
- \n
- PrestaShop 1.7 modules may not work on 8.x<\/li>\n
- A premium theme we purchased hadn\u2019t been updated for PHP 8, causing critical errors post-install<\/li>\n<\/ul>\n
\ud83d\udca1 TIP:<\/p>\n
Always check the compatibility of your themes and modules with the PrestaShop version you\u2019re installing. If you’re starting fresh, prefer a stable minor version, not just the latest.<\/p>\n
4. What Permissions & File Settings Broke Everything?<\/b><\/h2>\n
PrestaShop needs specific file and folder permissions<\/b> to install correctly. If these aren\u2019t set properly, you\u2019ll see install errors\u2014or worse, security vulnerabilities later.<\/p>\n
We once spent an entire afternoon debugging a blank module list page, only to discover that the \/modules folder had 777 permissions and was being blocked by the host\u2019s firewall.<\/p>\n
Recommended Permissions:<\/b><\/p>\n
- \n
- Files<\/b>: 644<\/li>\n
- Folders<\/b>: 755<\/li>\n
- Never use 777 unless testing locally\u2014and never leave it that way<\/li>\n<\/ul>\n
Also, double-check .htaccess and robots.txt files\u2014some FTP tools don’t upload them correctly.<\/p>\n
\ud83d\udca1 TIP:<\/b>
\n<\/b> After installation, delete the <\/b>\/install<\/b> folder<\/b> and set sensitive files like \/config\/settings.inc.php to 444.<\/p>\n5. Why Didn\u2019t the Database Connect (Even With Correct Credentials)?<\/b><\/h2>\n
This one drove us crazy.<\/p>\n
Even after triple-checking the DB name, user, and password<\/b>, PrestaShop kept throwing a database connection error during install. We ruled out typos. We checked MySQL logs. What was the issue?<\/p>\n
Turns out:<\/p>\n
- \n
- The database user didn\u2019t have GRANT privileges<\/b><\/li>\n
- The database host needed to be 127.0.0.1<\/b> instead of <\/b>localhost<\/b><\/li>\n
- Or, MySQL\u2019s sql_mode was too strict (common with MariaDB setups)<\/li>\n<\/ul>\n
\ud83d\udca1 TIP:<\/b>
\n<\/b> Run this command in MySQL before installing (if you have access):<\/p>\nSET GLOBAL sql_mode = ”;<\/p>\n
And avoid using symbols like <\/b>@<\/b> in your DB password<\/b> during install\u2014it confuses URL parsing in the script.<\/p>\n
6. How Did Add-ons & Themes Clash Right After Install?<\/b><\/h2>\n
So you\u2019ve installed PrestaShop. Great! Now it\u2019s time to add some flair with themes and modules… and then, boom\u2014500 errors, broken product pages, or the back office crashing.<\/p>\n
Most of the time, this happens because:<\/p>\n
- \n
- The theme is not compatible<\/b> with your PrestaShop version<\/li>\n
- The module conflicts with core files or overrides classes<\/b><\/li>\n
- You activated two modules, trying to hook the same space<\/b> without priority<\/li>\n<\/ul>\n
We once installed a shipping add-on that disabled the entire checkout process<\/b> because it overrode the carrier controller improperly.<\/p>\n
\ud83d\udca1 TIP:<\/b>
\n<\/b> Always install add-ons and themes one at a time<\/b>, test them, and take a backup<\/b> after each successful install.<\/p>\n7. Is the SSL\/HTTPS Setup a Dealbreaker?<\/b><\/h2>\n
In today\u2019s world, HTTPS isn\u2019t optional<\/b>. But enabling it improperly in PrestaShop can break your login sessions, cause redirect loops, or block backend access.<\/p>\n
What went wrong for us?<\/p>\n
- \n
- Enabling SSL in the PrestaShop back office before installing an SSL certificate<\/b>
\n<\/b><\/li>\n- Redirect loops caused by .htaccess rules and PrestaShop\u2019s URL rewriting<\/li>\n
- Session cookies are not saved due to mixed content<\/li>\n<\/ul>\n
\ud83d\udca1 TIP:<\/b>
\n<\/b> Always install your SSL certificate first via the hosting panel, then enable HTTPS<\/b> in PrestaShop\u2019s back office under “Shop Parameters > General”.<\/p>\nUse Chrome DevTools to spot mixed content errors.<\/p>\n
BONUS: What Did We Learn About Error Logging (the Hard Way)?<\/b><\/h2>\n
PrestaShop is powerful, but its error messages can be cryptic<\/b> (or hidden). When something breaks, the screen might just go white, with no obvious error.<\/p>\n
After several frustrating installs, we now always:<\/p>\n
- \n
- Enable debug mode immediately<\/b> post-install<\/li>\n
- Check \/var\/logs\/ for actual error logs<\/li>\n
- Inspect Apache or nginx error logs at the server level<\/li>\n
- Turn on PHP\u2019s display_errors in the hosting panel (for development only)<\/li>\n<\/ul>\n
\ud83d\udca1 TIP:<\/b><\/p>\n
To enable debug mode manually, edit \/config\/defines.inc.php and set:<\/p>\n
define(‘_PS_MODE_DEV_’, true);<\/p>\n
Final Thoughts \u2013 Install with Confidence, Not Chaos<\/b><\/h3>\n
Installing PrestaShop can be a smooth ride\u2014or a minefield\u2014depending on how prepared you are. As we\u2019ve seen, it\u2019s often the small details that create the biggest roadblocks<\/b>.<\/p>\n
At HiddenTechies<\/b>, we’ve helped countless clients launch fully optimised, stable PrestaShop stores. Whether you’re setting up your first store or migrating from another platform, our team ensures your installation is smooth, secure, and scalable.<\/p>\n
- The module conflicts with core files or overrides classes<\/b><\/li>\n
- The database host needed to be 127.0.0.1<\/b> instead of <\/b>localhost<\/b><\/li>\n
- Folders<\/b>: 755<\/li>\n
- Files<\/b>: 644<\/li>\n
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