Information Systems:Fix mailto links in IBM/Lotus Notes

Description

There exists a glitch/bug in IBM/Lotus Notes wherein clicking an email address link within an message prompts a cascade of Internet Explorer windows that is very difficult to suppress (appears to be a memory leak or an infinite loop). The normal behavior when clicking such a link is to compose a New Message addressed to that email.

Fix

• 1. Confirm that IBM/Lotus Notes (Mail component) is set as the default program for all possible defaults (Control Panel --> Default Programs).
• 2. Create the required registry value using these steps:

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Here's a fix:

   Open Registry Editor (type regedit in start menu).
   Locate HKEY_LOCAL_MACHINE\Software\Classes branch.
   Check if mailto key is present and has a string value of URL Protocol attached. Note: keys are alphabetically sorted, so first there are the ones prefixed with a dot (file extensions), look for mailto farther down.
   If HKEY_LOCAL_MACHINE\Software\Classes\mailto key is not missing in your registry, then the cause of your problem is somewhere else, try uninstalling IE10 (Programs and Fetures -> View installed updates -> locate IE10 and uninstall). EDIT: see comments - there's a solution even if mailto is present.
   If HKEY_LOCAL_MACHINE\Software\Classes\mailto is missing as it was in my case, you have to restore it. In parent branch (Classes) right click, select New -> Key, name it mailto. In this new key create a string value (right click, New -> String value), give it name URL Protocol and you're done. Close regedit and see if it worked.