HTTP Error 500 (or 500.21) - Internal Server Error Handler

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Applies To: [ RightFax Express 2.1 ]

Summary:

With RightFax, when you attempt to log on to RightFax Express using a web-browser, they encounter an HTTP Error 500 (or 500.21) - Internal Server Error Handler.

When browsing to the fax interface by either http://<servername>/RightFaxExpress or http://<IPaddress>/RightFaxExpress in your browser’s location or address box. Once there, they receive a browser error.

Error: HTTP Error 500 (or 500.21) - Internal Server Error Handler.

Description:

Cause:

.NET Framework 4.5 installation problem

Solution:

To resolve this issue, see Microsoft Development Tech Article, Rerunning the .net installer in a repair mode.

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