# What is DDE?

**URL:** <https://forums.speedlife.net/t/what-is-dde/74905>\
**Category:** NYSpeed Off Topic\
**Created:** [October 15, 2009, 1:40pm UTC](https://forums.speedlife.net/t/what-is-dde/74905 "2009-10-15T13:40:22Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![walter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/walter/32/7202_2.png) [@walter](https://forums.speedlife.net/u/walter)\
**Post date:** [October 15, 2009, 1:40pm UTC](https://forums.speedlife.net/t/what-is-dde/74905/1 "2009-10-15T13:40:22Z")

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Other than Donkey Dicked Elephants?

I was having issues with email attachments opening slower than hell and goggled around and found out that I needed to turn of “DDE” under file types and the open command.

what is this crap, and why would it have turned itself on (I’m sure it is something I installed that switched it)

Much nicer now that I figured it out. I did a quick google and couldn’t find a succinct answer, if you google a better one post it up supernerds.

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**Author:** ![drvnkd](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/drvnkd/32/109615_2.png) [@drvnkd](https://forums.speedlife.net/u/drvnkd)\
**Post date:** [October 15, 2009, 1:43pm UTC](https://forums.speedlife.net/t/what-is-dde/74905/2 "2009-10-15T13:43:28Z")

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Dynamic Data Exchange.

Dynamic Data Exchange (DDE) is a standard inter-application communication protocol built into Microsoft Windows operating systems and many applications that run under Windows NT support it. DDE takes data from one application and gives it to another application. It allows Windows NT programs that support DDE to exchange data between themselves.

Edit: I just happend to be digging through dde help files trying to get Excel to write data to a PLC.

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**Author:** ![boxxa](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxxa/32/5045_2.png) [@boxxa](https://forums.speedlife.net/u/boxxa)\
**Post date:** [October 15, 2009, 1:44pm UTC](https://forums.speedlife.net/t/what-is-dde/74905/3 "2009-10-15T13:44:30Z")

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> **[Dynamic Data Exchange](https://en.wikipedia.org/wiki/Dynamic_Data_Exchange)**
>
> In computing, Dynamic Data Exchange (DDE) is a method of interprocess communication under Microsoft Windows or OS/2. It allows one program to subscribe to items made available by another program, for example a cell in a Microsoft Excel spreadsheet, and be notified whenever that item changes. DDE was partially superseded by Object Linking and Embedding (OLE), but remains used for simple interprocess communication tasks. Dynamic Data Exchange was first introduced in 1987 with the release of Windo...

Could be anything from pulling data from a server or remote source to having enhanced documents that have dynamic data that updates when its source updates.

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<div class="post-metadata">

**Author:** ![walter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/walter/32/7202_2.png) [@walter](https://forums.speedlife.net/u/walter)\
**Post date:** [October 15, 2009, 2:05pm UTC](https://forums.speedlife.net/t/what-is-dde/74905/4 "2009-10-15T14:05:46Z")

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Why would I want this option fagging up my normal operations though? It made everything open slow as shit.

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**Author:** ![boxxa](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxxa/32/5045_2.png) [@boxxa](https://forums.speedlife.net/u/boxxa)\
**Post date:** [October 15, 2009, 2:11pm UTC](https://forums.speedlife.net/t/what-is-dde/74905/5 "2009-10-15T14:11:49Z")

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DDE has never been reliable and can become corrupted like everything in Windows. Loading documents starts loading the DDE DLLS and extensions and poof. if you aren’t opening office documents that are using the features of it, just keep it off.