1428723 - Stub installer begins the progress from 0% when internet connection is interrupted from Control Panel

Status: NEW

(Firefox :: Installer, defect, P3)

Description

[Oana Botisan, Desktop Release QA]

[Affected versions]:
- Firefox 57.0
- beta 58.0b14

[Affected platforms]:
- Windows 10 x64.
- Windows 8.1 x32
- Windows 7 x32

[Steps to reproduce]:
1. Download a Firefox stub installer and run it. 
2. Disable the connection from Control Panel\All Control Panel Items\Network and Sharing Center\Ethernet Status when the progress bar is at about 30%.
3. Reconnect to internet
4. Observe the progress bar

[Expected result]:
- The installation resumes from the point where the connection was interrupted.

[Actual result]:
- The installation begins from 0%.

[Regression range]:
- This is a really old problem. It can be reproduce even on Firefox 20.0.

Comment 1

[Molly Howell (she/her) [:mhowell]]

We weren't even trying to handle this until 798005 landed for 58, but as of that patch this case really ought to work.