Error: No valid update available, can't quit and install

[James-Shared-Studios]

• Electron-Builder Version: ^24.9.13

• Node Version: 21.4.0

• Electron Version: ^27.1.3

• Electron Type (current, beta, nightly): current

• Electron-Updater Version: ^6.1.7

• Target: Windows 10 Pro 22H2

We have experienced the exact same issue as reported many years ago here: Error: No update available, can't quit and install #3269 and Error no valid update available, can't quite and install / EExist file already exist.

the latest update has been downloaded, but it can not be installed, and getting the following error: error: "Error: No valid update available, can't quit and install\n at m.install (C:\\Users\\Portal\\AppData\\Local\\Programs\\pragent-dev\\resources\\app\\dist\\main\\webpack:\\pragent-dev\\node_modules\\electron-updater\\out\\BaseUpdater.js:45:32)\n at m.quitAndInstall (C:\\Users\\Portal\\AppData\\Local\\Programs\\pragent-dev\\resources\\app\\dist\\main\\webpack:\\pragent-dev\\node_modules\\electron-updater\\out\\BaseUpdater.js:13:34)\n at IpcMainImpl.<anonymous> (C:\\Users\\Portal\\AppData\\Local\\Programs\\pragent-dev\\resources\\app\\dist\\main\\webpack:\\pragent-dev\\src\\main\\main.ts:1086:29)\n at processTicksAndRejections (node:internal/process/task_queues:95:5)" ---- event: {}

It does not seem that a valid solution has ever been discovered. Is there any solution available now? Please advise. Thank you.

[MadEddieFFS]

We had this recently and it was due to the signing certificate not validating as electron updater deletes the downloaded files and so this next step fails to find the files