When specifying a large number of allowed Internet Access or Start/Run Access program names and the total number of characters within the Sandboxie.ini exceed 512 characters after ProcessGroup= ... , then Sandboxie Control settings says that all programmes are permitted. The protective function is still guaranteed, but the next adding program action extinguishes all previous restriction settings.

(Sandboxie 3.44.2 / Windows 7 / 32bit)

Was this just a test, or do you have that many characters?
I thought that mine was long, at 323 characters.

No, it was not a test.

I have admitted in the internet sandbox currently 38 process names and I have to monitor very well so that no unwanted programs (eg by downloads) can be executed within the sandbox. Now I want to add two additional names and I had wondered that all entries are gone.

My own tests have shown that Sandboxie transmits without warning only a maximum of 512 characters after the equal sign in the line "Process Group =" of the INI file. Either there should be a warning that limits or more characters are allowed (the last would be my wish)!

There is indeed an arbitrary limit of 512 characters somewhere, I will change it to an arbitrary limit of ~2000 characters.

I adjusted that arbitrary limit in version 3.45.17, but I didn't try to actually reproduce the problem, so please take a look and tell me if the problem is resolved.

The problem is solved only partially.

In the INI file now more than 512 characters will be saved, but all entries in the configuration dialog disappear after applying. It appears that all programs are allowed. When you add other programs, all previous entries in the INI file is lost.

I suspect that the limitation is removed when saving, but when reading the values, there is also a limitation.

You're right, there was one more place in the code that had the arbitrary limit of 512 characters. Please try version 3.45.18.

Thanks, the problem is completely resolved! I have tested the beta version 3.45.19 under Windows 7 (32 & 64 Bit).
I am always impressed by the rapid solution of problems! Many thanks.