Error : Attachments file (Max. File size exceeded) ax 2012

// Error : Attachments file (Max. File size exceeded)
The standard is 4 MB.
If you change the value in AX,
you get an warning that you have to expand the MaxRpcSize.
1) Start the Registry Editor on your AOS machine.
2) Open the following registry key: HKLM\Software\Microsoft\Rpc
3) Add a new DWORD value named MaxRpcSize to the key.
4) Give the MaxRPCSize parameter a value of 0x00500000 (5 MB).
5) Close Registry Editor.