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Increase the Maximum Attachment File Size for the Salesforce Notes and Attachments Related List

Julkaisupäivä: Oct 8, 2026
Kuvaus

Organizations may need to increase attachment size limits when working with large files such as detailed presentations, high-resolution images, technical documentation, or comprehensive reports. The default 25MB limit in Salesforce Classic may not be sufficient for these business needs.

This article explains how to request an increase to the maximum attachment file size used with the Notes and Attachments related list. This controls how large a file can be when uploaded through the standard related list in Salesforce Classic. Note that this is different from the Increase Upload Size feature, which applies to Knowledge and Documents only.

Available Editions: All Editions. Default Limit: 25MB (Salesforce Classic). Maximum Limit: 65MB (Support can increase up to this amount). How to Increase: Submit a limit increase request with Salesforce Support.

Prerequisites: Review the File Size Limits in Salesforce article listed in Additional Resources before reaching out to Support.

Ratkaisu

This section explains how to increase the maximum attachment file size for the Salesforce Notes and Attachments related list beyond the default. This change requires assistance from Salesforce Support.

Requesting a Limit Increase

If you have reviewed all relevant documentation and still need to increase this limit, have a System Administrator submit a limit increase request by following these steps:

  1. Ask your administrator to open a Case with Salesforce Support.
  2. Include the Organization ID of your production or sandbox. To find your Organization ID, review "Learn how to find your Org ID" in Additional Resources.
  3. Confirm that you are the System Administrator authorized to request this limit increase.
  4. Provide a business justification as to why an increase is needed.
  5. Specify the limit you would like to increase to.

Salesforce Support reviews your request and takes action on it accordingly.

Attachment Size Limits in Salesforce Classic and Lightning Experience

The attachment size limit varies between Classic and Lightning Experience, and certain technical constraints apply based on how files are uploaded.

  • The default limit for Salesforce Classic is 25MB. Support can increase the limit up to 65MB.
  • Attachments larger than 36MB can be attached only through the user interface. API limits are not affected by this change and cannot be increased.
  • This limit increase does not apply to OnDemand Email-to-Case, because that 25MB limit is hard-coded.
  • The Salesforce Lightning attachment limit is set at 2GB (a hard-coded limit) and cannot be changed.
  • This limit controls the maximum size of an attachment when uploaded using the standard related list, Notes & Attachments.
Knowledge-artikkelin numero

000386090

 
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Salesforce Help | Article