File Extension ADU

.ADU File

File extension: ADU
File type: User Dictionary


Notes about the ADU file extension:



To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The ADU file type is primarily associated with 'Addict' by Addictive Software. Addict is a component suite that provides end-to-end solutions for adding spelling check and thesaurus support to your applications.

Detailed information for file extension ADU:


Primary association: Addict
Company: Addictive Software
Identifying characters Hex: 41 64 64 69 63 74 20 55 73 65 72 20 44 69 63 74 69 6F 6E 61 72 79 2C 20 56 65 72 73 69 6F 6E 20 , ASCII: Addict.User.Dictionary,.Version
File Identifier - TrID
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database




To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension ADU click this link to expand/hide the additional area.

System Info for File Extension .ADU

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: txtfile
EXEFile: %SystemRoot%\system32\NOTEPAD.EXE %1


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