Specifications

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Log into your Microsoft Exchange 2010 Server as the administrator, and navigate to the Program Files > Microsoft > Exchange
folder, and create a copy of the file :Server > V14 > Client Access > exchweb > ews web.config
Open the original file using running as the administrator.web.config Notepad
In , go to , and enter in the field:Notepad Edit > Find max find what
Click until you locate the following line of code:Find Next
<httpsTransport maxReceivedMessageSize="13600000" authenticationScheme="Anonymous"
maxBufferSize="81920" transferMode="Streamed" />
The value represents a maximum attachment size of 13MB. Therefore, any attachmentsmaxReceivedMessageSize="13600000"
over 13MB cannot be restored. Change this value to a larger value to handle the largest attachment failing to restore, for
example, replace with which allows for attachments just over 50MB:13600000 53600000
Creating a copy of the file allows you to revert to your original settings in case you encounter issues duringweb.config
resolution of the restore error.