Symptom
You may be unable to view the body of plain text message inside Outlook and find it does work in safe mode.
Example:
Cause
This issue can be caused by a hidden option in “Signatures and Stationery” within the “Composing and reading plain text messages” section. If this is the case, your client may have non-default settings and you will see a “TextFontComplex” key inside the MailSettings Office Registry hive.
Example:
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<span style="color: black;font-family: Courier New;font-size: 10pt">[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\MailSettings] </span> <span style="color: black;font-family: Courier New;font-size: 10pt">"TextFontComplex"=hex:3c,68,74,6d,6c,3e,0d,0a,0d,0a,3c,68,65,61,64,3e,0d,0a,3c,\ 73,74,79,6c,65,3e,0d,0a,0d,0a,20,2f,2a,20,53,74,79,6c,65,20,44,65,66,69,6e,\ 69,74,69,6f,6e,73,20,2a,2f,0d,0a,20,70,2e,4d,73,6f,50,6c,61,69,6e,54,65,78,\ 74,2c,20,6c,69,2e,4d,73,6f,50,6c,61,69,6e,54,65,78,74,2c,20,64,69,76,2e,4d,\ 73,6f,50,6c,61,69,6e,54,65,78,74,0d,0a,09,7b,6d,73,6f,2d,73,74,79,6c,65,2d,\ 6e,6f,73,68,6f,77,3a,79,65,73,3b,0d,0a,09,6d,73,6f,2d,73,74,79,6c,65,2d,70,\ 72,69,6f,72,69,74,79,3a,39,39,3b,0d,0a,09,6d,73,6f,2d,73,74,79,6c,65,2d,6c,\ 69,6e,6b,3a,22,54,65,78,74,6f,20,73,65,6d,20,46,6f,72,6d,61,74,61,e7,e3,6f,\ 20,43,68,61,72,22,3b,0d,0a,09,6d,61,72,67,69,6e,3a,30,63,6d,3b,0d,0a,09,6d,\ 61,72,67,69,6e,2d,62,6f,74,74,6f,6d,3a,2e,30,30,30,31,70,74,3b,0d,0a,09,6d,\ 73,6f,2d,70,61,67,69,6e,61,74,69,6f,6e,3a,77,69,64,6f,77,2d,6f,72,70,68,61,\ 6e,3b,0d,0a,09,66,6f,6e,74,2d,73,69,7a,65,3a,31,31,2e,30,70,74,3b,0d,0a,09,\ 6d,73,6f,2d,62,69,64,69,2d,66,6f,6e,74,2d,73,69,7a,65,3a,31,30,2e,35,70,74,\ 3b,0d,0a,09,66,6f,6e,74,2d,66,61,6d,69,6c,79,3a,22,43,61,6c,69,62,72,69,22,\ 2c,73,61,6e,73,2d,73,65,72,69,66,3b,0d,0a,09,6d,73,6f,2d,61,73,63,69,69,2d,\ 66,6f,6e,74,2d,66,61,6d,69,6c,79,3a,43,61,6c,69,62,72,69,3b,0d,0a,09,6d,73,\ 6f,2d,61,73,63,69,69,2d,74,68,65,6d,65,2d,66,6f,6e,74,3a,6d,69,6e,6f,72,2d,\ 6c,61,74,69,6e,3b,0d,0a,09,6d,73,6f,2d,66,61,72,65,61,73,74,2d,66,6f,6e,74,\ 2d,66,61,6d,69,6c,79,3a,43,61,6c,69,62,72,69,3b,0d,0a,09,6d,73,6f,2d,66,61,\ 72,65,61,73,74,2d,74,68,65,6d,65,2d,66,6f,6e,74,3a,6d,69,6e,6f,72,2d,6c,61,\ 74,69,6e,3b,0d,0a,09,6d,73,6f,2d,68,61,6e,73,69,2d,66,6f,6e,74,2d,66,61,6d,\ 69,6c,79,3a,43,61,6c,69,62,72,69,3b,0d,0a,09,6d,73,6f,2d,68,61,6e,73,69,2d,\ 74,68,65,6d,65,2d,66,6f,6e,74,3a,6d,69,6e,6f,72,2d,6c,61,74,69,6e,3b,0d,0a,\ 09,6d,73,6f,2d,62,69,64,69,2d,66,6f,6e,74,2d,66,61,6d,69,6c,79,3a,22,54,69,\ 6d,65,73,20,4e,65,77,20,52,6f,6d,61,6e,22,3b,0d,0a,09,6d,73,6f,2d,62,69,64,\ 69,2d,74,68,65,6d,65,2d,66,6f,6e,74,3a,6d,69,6e,6f,72,2d,62,69,64,69,3b,0d,\ 0a,09,64,69,73,70,6c,61,79,3a,6e,6f,6e,65,3b,0d,0a,09,6d,73,6f,2d,68,69,64,\ 65,3a,61,6c,6c,3b,0d,0a,09,74,65,78,74,2d,74,72,61,6e,73,66,6f,72,6d,3a,75,\ 70,70,65,72,63,61,73,65,3b,0d,0a,09,6d,73,6f,2d,66,61,72,65,61,73,74,2d,6c,\ 61,6e,67,75,61,67,65,3a,45,4e,2d,55,53,3b,0d,0a,09,76,65,72,74,69,63,61,6c,\ 2d,61,6c,69,67,6e,3a,73,75,70,65,72,3b,7d,0d,0a,2d,2d,3e,0d,0a,3c,2f,73,74,\ 79,6c,65,3e,0d,0a,3c,2f,68,65,61,64,3e,0d,0a,0d,0a,3c,2f,68,74,6d,6c,3e,0d,\ 0a </span> |
Which translates to:
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<span style="color: black;font-family: Courier New;font-size: 10pt"><head> < style> </span> <span style="color: black;font-size: 10pt"><span style="font-family: Courier New">/* Style Definitions */ p.MsoPlainText, li.MsoPlainText, div.MsoPlainText {mso-style-noshow:yes; mso-style-priority:99; mso-style-link:"Texto sem Formata</span><span style="font-family: MS Gothic">￣</span><span style="font-family: Courier New">o Char"; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; mso-bidi-font-size:10.5pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; color:#2F5496; mso-themecolor:accent5; mso-themeshade:191; display:none; <span style="background-color: yellow">mso-hide:all;</span> text-transform:uppercase; mso-fareast-language:EN-US; vertical-align:super;} < /style> < /head> </span></span> |
You also can find the problematic setting inside outlook options for “Signatures and Stationery” within the “Composition and reading plain text messages” section.
Example:
Note: The “Hidden” option for the message body causes the text within messages bodies of plain text messages to be hidden inside outlook.
Resolution
This issue can be resolved by deleting the “TextFontComplex” key from “HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\MailSettings”, which will reset these settings back to default, or modify the “Stationary and Fonts” settings accordingly.