Today When I started my "C:\_PortableApps.com\Thunderbird Portable"\ThunderbirdPortable.exe" My Thunderbird "Portable" opening panel contains no information. The only thing I could see was if I clicked on "Account Settings" Tab. The only way I could Fix it was Closing Thunderbird and renaming "C:\_PortableApps.com\Thunderbird "\ to C:\_PortableApps.com\Thunderbird Portable" to "C:\_PortableApps.com\Thunderbird Portable-Broke" and the Start "C:\_PortableApps.com\Thunderbird Portable-Broke\ThunderbirdPortable.exe" I even Deleted My "C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profile" Folder and reinstalled "ThunderbirdPortable_102.10.0_English.paf.exe". I think somewhere on local computer something is "Referencing" The "C:\_PortableApps.com\Thunderbird Portable" Folder it won't let my Opening Page show anything. If I copy "C:\_PortableApps.com\Thunderbird Portable-Broke" and Rename it "C:\_PortableApps.com\Thunderbird Portable" Folder it won't let my Opening Page show anything, But If I start "C:\_PortableApps.com\Thunderbird Portable\\ThunderbirdPortable.exe" I can see my Opening Page. I can't remember if I added any files to "My Local Folders" In most of my Setups on other computers with different email addresses I usually do and I can't remember If I did on this computer for sure.