Dex – How to Fix the File Association for the .DIC extension

David Meego - Click for blog homepageThis is a reposting of an article I originally wrote on my Developing for Dynamics GP blog.

In the Dex – Identifying the build number of a Development Dictionary post, we covered using the Windows Explorer to get the dictionary version from the file properties.  This only works if the .DIC extension is correctly associated with Dexterity as a Dexterity Dictionary.

On my system, I find that every time Windows Update installs updates to Microsoft Office, the .DIC extension is changed to be associated with Notepad as a Text Document.

Below are the steps to change the association back using the Registry Editor.

  1. Click Start >> Run…, type “RegEdit” and press Enter or if Run is not enabled, Click Start and in the Search field, type “RegEdit” and press Enter.
  2. Locate the ComputerHKEY_CLASSES_ROOT.dic node.
  3. Change the string value for the Default registry key from txtfile to DIC_auto_file.
  4. Close the Registry Editor window.

DISCLAIMER:  The Registry Editor should be used carefully and only if you are comfortable making registry changes.  Use of the Registry Editor is not supported.

Attached to the bottom of this post is a zipped .reg file which can be double clicked on to make the same change to the registry.

Hope this helps.




24-Apr-2019: Updated Registry file added as attachment with more complete registry fixes.

This article was originally posted on the Developing for Dynamics GP Blog and has been reposted on

3 thoughts on “Dex – How to Fix the File Association for the .DIC extension

Please post feedback or comments

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.