Title: Table prefix issue
Last modified: October 9, 2025

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# Table prefix issue

 *  Resolved [juansandro](https://wordpress.org/support/users/juansandro/)
 * (@juansandro)
 * [8 months ago](https://wordpress.org/support/topic/table-prefix-issue/)
 * For some reason, it seems that Fluent Form has trouble installing on a website
   where the table prefix in the database has been changed. In other words, it’s
   not the default **wp_** prefix — for example, it’s **skhw_** instead. The plugin
   installs, but it never fully creates all the necessary tables required for proper
   functionality.
 * I read somewhere that this could be the cause of the problem.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Support [Amimul Ihsan](https://wordpress.org/support/users/amimulihsanmahdi/)
 * (@amimulihsanmahdi)
 * [8 months ago](https://wordpress.org/support/topic/table-prefix-issue/#post-18676112)
 * Hello [@juansandro](https://wordpress.org/support/users/juansandro/),
 * Thanks for reaching out. A custom database prefix can sometimes cause this type
   of issue.
 * To help me troubleshoot, could you please provide:
    1. A list of the Fluent Form tables that failed to create.
    2. Your database engine name(e.g., InnoDB or MyISAM).
    3. Any relevant errors from your PHP or WordPress debug logs.
 * In the meantime, please try deactivating and then reactivating the plugin. This
   often forces the tables to be created correctly.
 * Thank you
 *  Thread Starter [juansandro](https://wordpress.org/support/users/juansandro/)
 * (@juansandro)
 * [7 months, 4 weeks ago](https://wordpress.org/support/topic/table-prefix-issue/#post-18677475)
 * To asnwer your questions:
    1. Only one table was created
    2. MyISAM
    3. There was a lot of errors
 * ….reinstalling, deactivating, then activatating did not help.
 * However, in the mean time, what I did is imported all the tables from another
   installation, and installed the plugin again….and it worked.
   Thank you! Done.
 *  Plugin Support [Amimul Ihsan](https://wordpress.org/support/users/amimulihsanmahdi/)
 * (@amimulihsanmahdi)
 * [7 months, 4 weeks ago](https://wordpress.org/support/topic/table-prefix-issue/#post-18678535)
 * Hello [@juansandro](https://wordpress.org/support/users/juansandro/),
 * Thank you so much for the detailed follow-up and for sharing your solution. I’m
   glad to hear you were able to get it working!
 * Your information was very insightful and helped us confirm the root cause. The
   problem wasn’t the custom table prefix as initially suspected, but rather the`
   MyISAM` database engine your site is using.
 * Fluent Forms, like many modern WordPress plugins, is designed to work with the`
   InnoDB` engine because it supports more advanced features like foreign keys and
   transactions. The limitations of `MyISAM` are why the process failed after creating
   the first table.
 * While your manual import was a clever workaround, we highly recommend converting
   your database tables from `MyISAM` to `InnoDB` for better long-term stability
   and compatibility. This is the standard for modern WordPress sites and will prevent
   similar issues with other plugins in the future.
 * Thanks again for bringing this to our attention. Please feel free to reach out
   if you have any other questions!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Table prefix issue’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Amimul Ihsan](https://wordpress.org/support/users/amimulihsanmahdi/)
 * Last activity: [7 months, 4 weeks ago](https://wordpress.org/support/topic/table-prefix-issue/#post-18678535)
 * Status: resolved