Welcome to the IDM Forum. This forum is meant as a user-to-user support mechanism where users can share knowledge and tips for all IDM software.
Since these forums are user-to-user based, IDM does not regularly read or reply to the posts in this forum. For problem reports, suggestions, or feature requests, you must email us directly. Our trained technical support staff answers most inquiries within 30 minutes.
UE help wrote:How can I use a different compare application?
By default selecting the Compare Files command in the File menu invokes UltraEdit's own compare utility. If you prefer to use a different compare application you may do this by adding the following setting to the uedit32.ini file under the [Settings] section:
Compare EXE="fully qualified path of EXE"
This setting allows the user to specify a different File Compare program to be used in place of the standard utility provided with UltraEdit. If this is set, UltraEdit will use this EXE in place of its own utility. The only command line parameters passed to the utility will be the file names (with paths) of the files to be compared.
IDM wrote:Thanks for your message. We recently received another report of this and confirmed that this is an issue and actually has been since v15.20. This will be corrected in a future update, and I apologize for the inconvenience.