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Increase Maximum attachment file size

Knowledge Article Number 000229960
Description Available in: Contact Manager, Group Edition, Professional Edition, Enterprise Edition, Performance (AKA - Unlimited) Edition, Developer Edition,

This feature controls the maximum size of the attachment uploaded using related list, Notes and Attachments. 

NOTE: There is a separate feature called Increase Upload Size. More info can be found here :

Resolution To request an increase in the allowed maximum attachment file size, review the file size limits documentation.

After you've reviewed the file size limit documentation, have the system administrator contact Salesforce with the following information:
1. What's Organization ID of the production or sandbox? Learn how to find your Org ID
2. Are you the system administrator authorized on behalf of this organization to request this feature?
3. What's the requested limit?

NOTE: The default limit is 25MB. Support can increase the limit up to 65MB. Attachments larger than 36MB can be attached only via User Interface.

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