Hi, After upgrading Firefox from version 77.0.1 to 78.0.2, we have observed a difference in "profiles.ini" file having "Locked=1" property. I understand, Firefox 67+ versions adds an entry with "Locked=1" in Profiles.ini for the Profile Manager to launch the corresponding profile as default profile (without asking which profile to use at startup). This allows the users to run different Firefox installations/flavors (like regular, Beta, Dev, Nightly,etc.) at the same time by using a dedicated default profile for each flavor of Firefox. As per my understanding, if there is only installation of Firefox is present in a machine, then only one section in Profiles.ini that corresponds to the default profile will have "Locked=1" property. However on upgrading to Firefox version 78.0.2 from 77.0.1, we have observed two sections are having "Locked=1", although there is only one installation of Firefox is present in that machine. Please find the uploaded screenshot of profiles.ini file having two sections with "Locked=1" in them. Is it a bug in the new version(78.0.2) of Firefox or I am wrong with my understanding? The below mentioned links are related to this post, but does not have the relevant information about multiple profiles having "Locked=1" when only one flavor of Firefox installed in the machine. '''Reference Links: ''' # Numbered list item[[Dedicated profiles per Firefox installation|https://support.mozilla.org/en-US/kb/dedicated-profiles-firefox-installation]] # Numbered list item[[Understanding in depth the profile per installation feature|https://support.mozilla.org/en-US/kb/understanding-depth-profile-installation]] # Numbered list item[https://support.mozilla.org/en-US/questions/1276002 What does "Locked=1" in profiles.ini do?] Thanks & Regards, Manoj Kumar