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Old 01-12-2018, 07:58 AM
bgagnon bgagnon is online now
VanDyke Technical Support
Join Date: Oct 2008
Posts: 4,212
Hi blittlej,

If you need to clear the default handler, you might try these steps (but I don't think they have been verified on High Sierra):
  • Open ~/Library/Preferences/

  • Locate the entry that sets the telnet handler to SecureCRT and delete it; then save.

  • In Terminal, from your home folder, run the following command:
    /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user

  • Now, rerun SecureCRT to register SecureCRT (actually the Url Launcher) as the telnet handler. If the prompt doesn't show up, you may need to set the Check Shell Telnet Command to 00000001.

By "changed the Global.ini file", you mean you made that change referenced above, correct?
D:"Check Shell Telnet Command"=00000000
D:"Check Shell Telnet Command"=00000001

I have added this thread to a feature request in our product enhancement database to make it easier to set SecureCRT as the default Telnet handler (url). Should a future release of SecureCRT include this feature, notification will be posted here.

If you prefer direct email notification, send an email to and include "Feature Request - Forum Thread #12977" in the subject line or use this form from the support page of our website.

VanDyke Software
Technical Support
(505) 332-5730
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