sqlite open db on local server

[Gintaras]

If I use the program 'DB Browser for SQLite' (windows version) I am able to open the database on the server from a local computer.

Maybe different sqlite dll version. Try to replace the dll in QM folder with the dll of 'DB Browser for SQLite' (if exists and is 32-bit), or with the newest dll version (32-bit) wherever you'll find it on the internet.

If 'DB Browser for SQLite' is open-source, look in its source code, how it opens databases.

Try to open as read-only.
Sqlite db1.Open("\\VISTA32\shared\test.db3" 3)