Hello If we use an ISR page as a success page from a Netlify form we get a 405 error. We remove the ISR part of the page and the getStaticProps from the success page and the form starts working. What is the solution to this?

You should not submit the form to a page that’s using ISR, rather a static HTML page. This is explained here: [image] [Support Guide] Form problems, form debugging, 404 when submitting Support Guides Last reviewed by Netlify Support in July 2025 sparkles As…

Method now defined if form success page is an ISR page

Support

hrishikesh December 18, 2022, 11:48am 2

You should not submit the form to a page that’s using ISR, rather a static HTML page. This is explained here:

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Method now defined if form success page is an ISR page

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