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Outlook Error: "Attachment size exceeds the allowable limit"

1.
Since Outlook 2013, there is a new maximum attachment size limit
The limit is 20MB for all attachments.


2.
Warning, this is an advanced manipulation
Type "regedit" in Windows start menu to open Windows registry.


3.
Search for these keys, (x.0 = your Outlook version : 16.0 = Office 2016)
HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\Preferences
HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\x.0\Outlook\Preferences


4.
Create a DWORD value if it doesn't already exist (0 = no limit)
Type : DWORD
Name : MaximumAttachmentSize
Value : 0
5.
Exit Windows registry and restart Outlook
Source : Microsoft


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