Where Does UltraVNC Store Its Config?
Where UltraVNC keeps ultravnc.ini across shared, user and portable modes.
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UltraVNC resolves its ini through a priority chain: portable marker beside the exe wins, then per-user LocalAppData, then shared ProgramData. Fresh installs create the shared copy and migrate legacy install folder files there automatically.
The service always reads the shared or portable copy, never a user folder. That split explains settings that stick in the viewer but vanish for service mode connections. Pick one mode per machine and keep it.
Where UltraVNC stores this, by platform
C:\ProgramData\UltraVNC\ultravnc.ini
Shared fallback config for all users plus the service. Copy it to the LocalAppData sibling path for a personal editable copy. Passwords store obfuscated here, so guard the file.
Frequently asked questions
Settings will not save without admin rights. How do I fix that?
Copy the shared ini from ProgramData into %LOCALAPPDATA%\UltraVNC and restart. The app then uses your editable copy while the service keeps the shared one, which is the documented hybrid workflow.
How do I run UltraVNC as a portable app?
Create an empty ultravnc.portable file in the application folder. Both app and service then use the ini beside the binaries, which suits USB sticks and throwaway test machines.
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