mht or mhtml is Restricted File Type Valid File Types Include

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When uploading an mht or mhtml file to Bulk Emailer moduel for DotNetNuke. You receive a message that looks like this:

The File C:\Inetpub\XXXXXXX\httpdocs\Portals\0\filename.mht Is A Restricted File Type. Valid File Types Include ( *. swf, *.jpg, *.jpeg, *.jpe, *.gif, *.bmp, *.png, *.doc, *.docx, *.xls, *.xlsx, *.ppt, *.pptx, *.pdf, *.txt, *.xml, *.xsl, *.xsd, *.css, *.zip, *.template, *.csv, *.htmtemplate ). Please Contact Your Hosting Provider If You Need To Upload A File Type Which Is Not Supported.


1. Login to your DotNetNuke website as a host.

2. Navigate to the HOST / Host Settings page – Other Settings

3. Add ‘,mht,mhtml’ (without the ”) into the Allowable File Extensions.

4. Click Update and you are done.

DotNetNuke only allows certain file types to be uploaded by default. You need to allow DNN to accept the Microsoft MHT or MHTML file type if you plan on using it with Bulk Emailer.

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