SEP 15 2017

How to install SUPEE-10266

September 15, 2017: Community Edition and SUPEE-10266 Security Enhancements – 9/15/2017.
New SUPEE-10266 patch can be downloaded as usual from Downloads page: or installed as a regular Magento upgrade via Downloader (it is included in Magento version). You can install it in the same way as previous patches or by upgrading to Magento To apply the patch you need SSH access (shell access actually, SSH is just most used way to get shell access) to the server. If you have no SSH access, you can refer to How to apply SUPEE-10266 without SSH. If you wish to save time and have us to install these patches for you, simply click here to order installation.

Step 0: Preparations

Note: Make sure to Disable Magento Compiler at System > Configuration > Tools > Magento Compiler and clear compiled cache.

Step 1: Verify your Magento version

$ grep -A6 'static function getVersionInfo' app/Mage.php
    public static function getVersionInfo()
        return array(
            'major'     => '1',
            'minor'     => '9',
            'revision'  => '3',
            'patch'     => '3',
As you can see in the example, it is Magento

Step 2: Download corresponding patch

The patch should be downloaded from Make sure to get the right file corresponding to your Magento version.

Step 3: Place patches into Magento Root directory

Upload your files into Magento root directory. It is important to place patch files directly into Magento root directory and execute it also directly in Magento root directory.
$ ls -1 .

Step 4: Run the patches

$ bash ./
Checking if patch can be applied/reverted successfully...
Patch was applied/reverted successfully.

Step 5: Verification and flush of Magento PHP opcode cache

Flush Magento caches: Navigate in Magento backend to System > Cache Management and flush Magento cache and CSS/JS caches. If you use PHP opcode caches (OPCache/APC/XCache/eAccelerator) make sure to flush it after patching (or restart webserver), otherwise code will continue to run from caches. Test that your store is working. Test Checkout process. If you have any difficulties with applying the patches please let us know in comments, so we can find the solution together.  

Posted in: Magento Maintenance

How to install SUPEE-10266
32 votes, 5.00 avg. rating (99% score)
  • Swiss-Mage

    Hi there – a quick question. We are on Magento – tried to update with Downloader to latest magento It doesn’t work. I always get “bla bla is conflicting with bla bla”. In the end, it doesn’t update to
    So, is it better to install patch instead? Or if better to update – what is the best way to update to
    Thanks in advance!

    • ChristosConstantinou

      Same issue here, Magento seems to have released a broken upgrade. The solution is to first apply the recent patches and THEN upgrade to

      • Swiss-Mage

        Thanks. I tried with SH files, got an “OK”, but the files have not been patched. Damn. Ok, will try later again :-(

    • magentary

      The only difference between Magento and Magento with SUPEE-10266 patch is version string, so SUPEE-10266 contains all changes from and installing SUPEE-10266 on top of or upgrade of to will lead to the same results. Applying the patch seems to be the easiest way to go in that case.