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Myra Online Help Updated · 21 Aug 2026

HTML file is not accepted

Description

Uploading an HTML file for a custom error page or a maintenance page fails. Depending on the cause, one of the following messages appears:

  • Unable to upload <file name>. Only .html or .htm files are supported! — the file has a different extension.
  • <file name> doesn't contain HTML code! — the file contains no readable HTML code.
  • Your HTML code is invalid. Please fix it before saving. — the HTML code entered is faulty.

A custom error page and a maintenance page always require a valid HTML page. Entries with missing HTML pages or HTML pages without a valid structure cannot be saved.

Resolution

Proceed as follows to resolve the error: