Licensing
21-day grace, 30-day old data, instrument serial .lic, network LicenseFolder, prerelease expiry.
Instrument serial-number licensing for Quanto. Values below come from LicenseChecker in the product code. This is not 21 CFR Part 11 electronic records or signatures — see Validation notes.
How MayProcess works
A sample may be processed when any of these is true:
| Rule | Constant / meaning |
|---|---|
| Installation grace | InstallationGraceDays = 21 from first use (Settings.json FirstUseDate) |
| Old data | DataFileFreeLicenseAfterDays = 30 — acquisition older than 30 days is free |
| Serial license | Instrument serial appears in a Quanto *.lic file in the license folder |
MayProcess is used for Analyze-style work. Saving has a stricter rule after grace ends (below).
Instrument serial licenses
- Licenses are per instrument serial number (read from the sample / data file).
- Serials are listed in
*.licfiles under the license folder. - Unlicensed serials are still highlighted in the UI even during grace or for old data, so you can see what will need a license later.
- Domain / user licenses (when present in the license lists) can also authorize processing; site setups normally use instrument
.licfiles.
License folder
| Item | Value |
|---|---|
| Default folder | C:\Users\Public\Documents\Quanto\License (Paths.DefaultLicenseFolder) |
| Override | LicenseFolder in %LOCALAPPDATA%\Quanto\Settings.json |
| Network | Point LicenseFolder at a shared folder so every PC reads the same *.lic files |
Create the folder if it does not exist. Analysts need read; the person who drops new licenses needs write. Details: Installation and folders.
Save blocked by missing license
After the 21-day grace ends, save is refused when the batch still has recent samples (acquired within 30 days) whose serials are not licensed. Grace and data older than 30 days still allow saving.
The app can build a license-request zip on the desktop for email to the vendor (see the in-app missing-license notice).
Shift during splash
Hold Shift while the splash is visible to recycle settings, layouts, and/or licenses (items go to the Recycle Bin). Useful after copying a wrong license folder or resetting a demo PC. Same gesture is documented under Workspace and installation.
Alpha / prerelease expiry (separate from instrument license)
Prerelease builds show a splash expiry from SplashIdentity:
| Item | Value |
|---|---|
ExpirationDaysAfterBuild |
60 (build date + 60 days) |
| Message | “This is a prerelease. This copy expires on …” |
That calendar lock is independent of instrument serial licensing. A valid .lic does not extend a prerelease binary past its build+60 expiry; renewing the build does not replace serial licenses.
What this guide does not claim
- No Part 11 audit trail, e-signature, or electronic-record controls are documented here — none were found as product features for that purpose. See Validation notes.