Applied to: ZWCAD Mechanical 2017
Issue:
When double-clicks a DXF attachment in Outlook, it doesn't open in ZWCAD Mechanical and it prompts "Can't find the specific file" or something like that.
Cause:
This is because the DXF association with ZWCAD Mechanical lost.
Solution:
1) Firstly recreate the File Association with ZWCAD Mechanical. Click "Yes" and check to remember the choice in the following dialog box when it prompts:
If this dialog box doesn't prompt when open ZWCAD Mechanical, you can visit this solution to fix: How to make the File Association dialog box appear again?
2) Find the item HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.dxf and then create the following keys if they do not exist.
In OpenWithList to create a string "a" with "zwcad.exe"
In OpenWithProgids to create a binary "ZWCAD.DXF.2017" with 0 0 0 0
In UserChoice to create a string "Progid" with "ZWCAD.DXF.2017"
3) Right clicks any DXF drawing, and then select ZWCAD.exe as the default program to open.