I have a crappy Internet connection (with a down speed of 62 KBps). I usually keep my PC for downloading stuff whole night and it only downloads 1.8 GB in 10 hours! (I know that's crap)
While downloading from a host site I could only download an 800 MB file in one go. If I put two files (of 800 MB each), both the downloading gets interrupted and I get nothing in the morning. No matter what downloader I use, it gets cancelled, have used Chrome Downloader, J Downloader, etc. No luck

Is there any way I could put one file for downloading and the second file in queue which should start downloading automatically after the first file gets completed?

 

In jDownloader,
Click the Setting TAB,
Then change MAX Simultaneous Downloads to 1

 

well that happen because most of the host files use the CAPTCHA system,why you dont pay for a debrid account?i know some software is very expensive to buy but you can pay 10 dollars for a debrid account and download files without any issue,right now im using this debrid service Premiumize.

 

In jDownloader at the bottom on the right are three items:
Max. Con., Max. Dls., & Speed

The middle one [Max Downloads] is a quick adjustment of how many DLs at once.
Easy to change settings if you have some very small files and some large ones.

 

There is something called CaptchaTrader where you basically solve other people's CAPTCHAS and get credit. You should pay for a debrid account though, I mean it's so cheap and I'm sure it would pay for itself after the first download.

 

I use:
Browser - Firefox
Download Plugin - DownloadThemAll
Subscribe to: UL.to / Uploaded (~$9/month)

Downloadthemall can control the maximum number of simultaneous downloads. Eg. '1' = only 1 in the queue at a time.
Can also control the number of segments / slots per download * only for higher bandwidth access.

 

I was having the same problem and decided to try a Google Chrome extension called Fruumo Download Manager, I ended up downloading up to 8 files at the same time without having interrupted downloads. Hope it helps.

 

But how it will start the second downloading automatically ? I guess, you have to enter captcha first!

Since, I will put two files (of 800 MB each) simultaneously (then I'll go for sleep), so I want the second one to start downloading after the first one gets completed! By setting the Max Download to 1, it will only download one file at a time, that's great! but still my question is
Will the other file will start downloading by itself after the first gets completed?

 

it depends on the link itself:
is it a free link
is it a free link with Captcha
is it a premium link, a host your paying for??

All in all if there is no captcha like firedrive links are, all your links will download.