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413 Error on power page form with file attachment

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Posted on by BlakeB123

Hello,

I am working on a contact us form that has a file attachment option. We have a maximum file size set to 20mb and have a message set in case the file is too large.

When we submit an image that is somewhat larger than this limit (around 30mb), the error message is displayed. However, much larger files (I tested with a >100mb file) instead causes the site to display a 413 error, stating the file is too large. Is there another configuration that is needed for this change to reflect for all file sizes?

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Fubar 8,503 Super User 2026 Season 1 on at

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Dataverse has a max file size also, by default is set to about 5Mb but can be increased to about 120, your setting on the File Attachment config will need to be less than what the Dataverse size is set to. It is set under the advanced settings see under Set file size limit for attachments (note: whilst it is grouped with email it applies to more than just email) https://learn.microsoft.com/en-us/power-platform/admin/system-settings-dialog-box-email-tab

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BlakeB123 12 on at

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I was able to figure it out a way to prevent customer from seeing the error by using page validator function in javascript.

function pagevalidate_attachsize(msg) { if (typeof (Page_Validators) == 'undefined') return; var newValidator = document.createElement('span'); newValidator.style.display = "none"; newValidator.id = "attach_size"; newValidator.controltovalidate = "attachfield"; newValidator.errormessage = "The file is too big"; newValidator.validationGroup = ""; // Set this if you have set ValidationGroup on the form newValidator.initialvalue = ""; newValidator.evaluationfunction = function () { var fa = $("input[type='file']"); if(fa != null) { if(fa[0].files.length > 0) { for(var i = 0; i < fa[0].files.length; i++) { var file = fa[0].files[i]; if(file.size > 13210000) { return false; } } } } return true; }; Page_Validators.push(newValidator); }); }

Page Validator logic: https://powerusers.microsoft.com/t5/Customize-Extend/Custom-Form-Input-Validation-on-a-single-field/td-p/2406837

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BlakeB123 12 on at

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@Fubar
Thank you for the response. I tried it out but it didn't appear to work.... I set the max file size in advanced settings a little bit above the max file size on the form but I was still receiving the 413 error.

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