Change the limit for the number of MIME headers

By default, the limit is 20000 for the number of MIME headers when an e-mail message is converted from MIME to MAPI. The number can be set to any positive integer. This helps prevent scenarios in which Outlook hangs while attempting conversion.

Supported on: At least Windows Vista

Registry PathSoftware\Policies\Microsoft\Office\12.0\Outlook\Options\Mail
Value NameMIMEHeaders
Default Value20000
Min Value
Max Value99999


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