Unity Hubs doesn't install Unity

Hi!
I'm using Unity Hub 2.4.2, I'm trying to install Unity ( for example, the "Recommended Release"), I go through the install wizard, and the install starts and I see the progress bar in the "square" representing the new unity install, however as the installation finishes the square representing the new unity install just disappears without any error message, and in the install location is just an empty folder with the name of the new unity install

 

I'm using win10 - I tried uninstalling UnityHUB, deleting stuff from Temp/Appdata relating to unityHub but same thing

 

here is the error from the log

Code (CSharp):

1. {"moduleName":"Download","level":"info","message":"[ 'Editor download ended successfully. Download id: 2019.4.17f1' ]","timestamp":"2021-01-12T09:38:49.040Z"}
2. {"moduleName":"Installer","level":"info","message":"[ 'Install 2019.4.17f1: C:\\\\Users\\\\user\\\\AppData\\\\Local\\\\Temp\\\\unityhub-3b0e18a0-54b7-11eb-9457-779501bdf18c\\\\UnitySetup64-2019.4.17f1.exe to F:\\\\Program Files\\\\UnityHubInstalls\\\\2019.4.17f1\\\\2019.4.17f1 started' ]","timestamp":"2021-01-12T09:38:49.043Z"}
3. {"moduleName":"UnityInstallStepsWindows","level":"info","message":"[ 'install C:\\\\Users\\\\user\\\\AppData\\\\Local\\\\Temp\\\\unityhub-3b0e18a0-54b7-11eb-9457-779501bdf18c\\\\UnitySetup64-2019.4.17f1.exe /S /D=F:\\\\Program Files\\\\UnityHubInstalls\\\\2019.4.17f1\\\\2019.4.17f1' ]","timestamp":"2021-01-12T09:38:49.058Z"}
4. {"moduleName":"UnityInstallStepsWindows","level":"warn","message":"[ { Error: Command failed: \"C:\\Users\\user\\AppData\\Local\\Temp\\unityhub-3b0e18a0-54b7-11eb-9457-779501bdf18c\\UnitySetup64-2019.4.17f1.exe\" /S /D=F:\\Program Files\\UnityHubInstalls\\2019.4.17f1\\2019.4.17f1\n  \n      at ChildProcess.exithandler (child_process.js:312:12)\n      at ChildProcess.emit (events.js:194:13)\n      at ChildProcess.EventEmitter.emit (domain.js:469:20)\n      at maybeClose (internal/child_process.js:998:16)\n      at Process.ChildProcess._handle.onexit (internal/child_process.js:265:5)\n    killed: false,\n    code: 3221225794,\n    signal: null,\n    cmd:\n     '\"C:\\\\Users\\\\user\\\\AppData\\\\Local\\\\Temp\\\\unityhub-3b0e18a0-54b7-11eb-9457-779501bdf18c\\\\UnitySetup64-2019.4.17f1.exe\" /S /D=F:\\\\Program Files\\\\UnityHubInstalls\\\\2019.4.17f1\\\\2019.4.17f1' } ]","timestamp":"2021-01-12T09:38:49.101Z"}
5. {"moduleName":"UnityInstallerWindows","level":"warn","message":"[ 'error while installing the Editor! Trying to empty the folder! ',\n  { error:\n     { code: 'INSTALL_ERROR',\n       message: 'Error happened while executing the installer. Aborting.' } } ]","timestamp":"2021-01-12T09:38:49.104Z"}
6. {"moduleName":"UnityInstallerWindows","level":"warn","message":"[ 'Failed to install editor and modules [object Object]' ]","timestamp":"2021-01-12T09:38:49.106Z"}
7. {"moduleName":"EditorManager","level":"warn","message":"[ 'There was an unhandled error while installing the editor:',\n  { error:\n     { code: 'INSTALL_ERROR',\n       message: 'Error happened while executing the installer. Aborting.' } } ]","timestamp":"2021-01-12T09:38:49.107Z"}
8.