Riched20.dll is a file of application: Microsoft Outlook.
The riched20.dll library is used by windows applications to allow for the formatting of text in an editor.
If you receive a riched20.dll error Using Outlook 2000, you will need to rename riched20.dll to Riched20.old and run the Office 2000 repair tool.
After the repair process, the error message should disappear.
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