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How to Fix and Continue Broken or Corrupted IDM Downloads


What Is IDM?

Internet Download Manager (IDM) is a download accelerator and file organizer that manages the download of many types of files from the Internet.

Has IDM ever not been able to complete a download perfectly? Maybe it's stalled at 99% or a number very close to 100% and stops downloading altogether. Then, instead of the file you wanted, you get a totally corrupted download that you can't use.

IDM works by dividing the file into between two and ten parts in order to accelerate the download. At the end of the download, IDM combines all the file parts into one file. Sometimes, one of the file pieces was corrupted, in which case IDM could not merge the file and complete the download.

This can be especially frustrating when you're downloading large files with a slow connection. You wait for what seems like forever for your download, and then it gets stuck right when it was about to finish, and you can't start it back from the beginning.

Luckily, I have a solution to this problem that I worked out a couple of years ago that's still working well. I'll also include some other solutions to common problems.

A quick question about IDM

How to Continue Downloading

You only need this two things to implement my solution:

  1. Your system needs to have the capability to resume download, which means that if you fully stop downloading, the server should be able to support it so it can start it back at the point where it was stopped.
  2. You need a type of software called a file splitter and joiner. Here are two types of free software to choose from: Fastest File Splitter and Joiner 3.3 and HJ Split.

IDM Temporary Location


The Step-by-Step

Part One

  • Go to the IDM temporary file location, where IDM stores the file parts before completing the download
  • Look for and select "Options" in the IDM Toolbar.
  • Then, find and select the option to "save to" and search for "temporary directory" (see image above).
  • Copy the address. For example: C:\Users\rixpro\AppData\Roaming\IDM\DwnlData\

Side note: You should see a lot of files in IDM temporary file directory, which have not completed the download through IDM.

Part Two

  • Find the folder of the corrupted file (the one that failed to download completely). For example, if you're downloading a file named Ironman3_fullHD, there should be a folder with a name very similar to the one that you're downloading.
  • You can find the folder by searching for the file name and then opening it. Sorting the files by file size or date may also help you to find the folder.

Part Three

  • Once you open the file, you'll see it's been divided into different parts, usually between two and fifteen.
  • Not all of these files are corrupted, and you will be able to combine some of them.
  • Minimize this window and start your download again.
  • You should be able to see the IDM download progress bar indicate the combination of parts that are not corrupted. However, you still won't be able to complete this because there are still corrupted file parts left.
  • Close the download and maximize the IDM temporary directory.
  • Now you should see that some parts are now combined and there are only two or three files. These are the ones that can't combine at the end because the file is corrupted.

Side note: The log file is not important since it is not a part of the download. You can delete it.

Part Four

  • Now you have to use the file splitter and joiner to remove the corrupted end from the file parts. I'm not going to explain much about how to use the file splitter and joiner because the software is usually very easy to use. You can always Google it!
  • Open one file part with the software and split it so that one part contains 250 - 500 KB. For example, if your chosen file part is 10 MB, use the file splitter and joiner to split it into 20 parts so that each one will be 500 KB. Don't forget to delete the original file part. Now you have 20 parts with name extensions like filename.001, filename .002, filename.003 [...] filename.020
  • When you reach this point, delete the filename.020 (which is the corrupted end), and join the other 19 parts back together again using the software. You can also use the software settings so that the other file parts are deleted after you combine them again.
  • Do this for the remaining parts, also removing their corrupted end.
  • Now, go back to IDM and resume downloading and your download will finish perfectly.
Scroll to Continue

I hope this helps! If you have any questions, just leave a comment :)

Troubleshooting IDM Problems

  • If you're having trouble with IDM, make sure you have the latest version of the software in which some bugs may have been fixed.
  • Also, some applications like Internet security, antivirus, and firewall software can interfere with IDM. Follow the instructions in the section below to see if this could be the problem or if your software is on a list of applications with known issues.
  • Different internet accelerators or video accelerators may also interfere in a download process or cause problems.
  • Download problems are also common with proxy servers either set in IDM or transparent proxy servers that might be used by your Internet provider. In this case, try to change the proxy server, try another Internet provider, or use a VPN.
  • Make sure you're using a genuine version of IDM and that it is registered with a valid serial number.

FAQ: Why Does IDM Fail to Resume Download?

From the FAQ at IDM's website:

A failure to resume download can occur because of conflicts between IDM and other applications, such as the firewall, antivirus, or Internet security applications which control traffic and can change or cache all the files and file parts that are written on disk.

These kinds of problems are confirmed with Bit Defender 2012, see forum here. In the latest version of Bit Defender, however, this problem is solved so a simple software update could solve your problem if you are a Bit Defender user.

In addition, some firewalls and antivirus softwares are not ready for Windows Vista, Windows 7, or Windows 8 and 8.1, and work incorrectly as a result.

Please try to TEMPORARILY completely uninstall your firewall, antivirus, or Internet security application. Simply disabling it is not enough because some of these kinds of applications keep blocking access even if you turn them off. If your problem is solved after doing this, then that would indicate the application is the source of the problem.

At the bottom of this web page is a list of firewalls, Internet security, and antivirus applications with known problems. If your security application is present in the list on the page, you can find out how to configure it to work with IDM. If that still doesn't work, try contacting the application's developers to see if they have a solution. You could also try using a different security, firewall, or antivirus application.

If disabling your security application does not help, it's possible you have an application that functions like a firewall, antivirus, or security application that you do not know about. It may have something like "protector," "defender," "spyware remover," or "cleaner," in its name. If you find such application on your computer, try to uninstall it as well and see if your problem persists.

You could also have the same problem with resuming downloads if you use a proxy in the "Options->Proxy / Socks" IDM dialog. Try disabling it or using another proxy. Your Internet provider might also use an external proxy that could cause problems.

Do You Need IDM?

IDM is no longer a free software. There is a one-month trial period, after which you will need to pay to continue using it.

Many users have complained that the software is difficult to uninstall after the trial if they choose to not pay for it, and that their machines are slower afterwards as well.

There are many downloaders that are completely free and provide better service (according to reviewers on If you continue having problems with IDM, you may want to consider finding a different download accelerator altogether.

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.


M A Y S Perera (author) from Anuradhapura, Sri Lanka on February 01, 2021:

It seems like the problem is in your operating system

Did you try disabling your virus guard?

Huzaifa on May 13, 2020:

Don't worry.. open the IDM. then the go-to option. then click connections and select connection only 1 and resume your download.

Naved on November 26, 2019:

How to fix it in mobile

Remher on October 05, 2019:

i have experienced this problem once and i see this solution as very hard and very long. I have another solution which is more simpler and just very short. You just have to log your computer off then continue the download again. Then it may take a moment and then it will say download finished

MR on October 02, 2019:

Nice Info, Thanks Man!

Abdulrahman on September 12, 2019:

Omg i dont bielve it works thx bro omg i dont bileive omg omg omg thanks i hope you got a muslim and go to janah if you are not a muslim i hope you will be one to get to jannah cause you are helping other people and thats very nice and i will say just thanks thanks thanks very much omg i hope you go to jannah if you are a muslim if not i hope you will be a muslim and go to jannah cause islam is the right religion and you can read after it and jannah means heaven like paradise i hope you go there and have fun Good Bye And Thanks And I hop you go to jannah if you are a muslim

erkkjnkervn on February 27, 2019:

it stated from beginning

ROSE JAMES on October 03, 2018:


Talha on June 23, 2018:

Please Help I am having this issue where its saying download complete appending all parts into one file and its stuck there

mohammad on June 21, 2018:

Hi and thanks for your tutorial,I've got a question, I was downloading a file with size of 8 GB from google drive, when it reached the end and the remaining time was 20 seconds, it said the server expired,and it wanted to start over,does this trick work for my problem too??

charles dickenssa on May 22, 2018:

I believe idm is the best and I have been using it for a long time, I'm having a problem and I need your help, I downloaded idm yesterday and now I'm unable to install it on my pc, the installer just won't run, I downloaded it from so I thought the installer was corrupt but I also tried downloading from other websites and I'm still unable to install it please help me

caxgod on August 25, 2017:

one step, uninstall this crappy downloader.easy

M Adeel on August 02, 2017:

IT not work for me its shows Disconnect please help me

idrak3 on April 17, 2017:

Its worked thanks

Geetartha on March 16, 2017:

Thanks mate it worked for me for a zip file i downloaded. Cheers

Himanshu on December 28, 2016:

Sir,I was downloading a 76 GB file. And it got completed and started to appending files. Suddenly I don't know what happen my laptop gone off and when i resume the windows. I found there is a file of size 30 GB in the download folder and when I resume the appending process on the idm as it was interrupted due to shutdown. It was again downloading from 46 GB. Sir, please tell me what should I do to save those data. You are my last hope sir. Help me please!

keedy on October 18, 2016:

awesome bro... thnx it has helped me to get my game... i have suffered it many times but this time your post helped me... thanks..

hn on August 06, 2016:

hello.i wanted to download a movie(1.5gig)but when idm recieve to 85% download failed and start download from first 0%. how can i recover 85%download and resume my download. thanks alot

mostafaznv on July 07, 2016:

thanks ...

worked nice

Ferry Roland on July 01, 2016:

(continuing from the top) My download has been failed. sorry about it

Ferry Roland on July 01, 2016:

With your tips i was almost able to finish the download my Windows 7 Enterprise ISO (for my VM). However, when it reaches late 99% (eg. 99.73% or 99.81%) my download stops even i remove corrupt bits. Any help about it?

Ferry Roland on July 01, 2016:

With your step (video) i was able to progress, but i have a problem (even splitting/joining) at late (99.73%) download. It's hard, but i don't want to redownload or download from start again... :(

Qingcaohua on April 08, 2016:

Idealshare VideoGo is the best choice for merging FLV files, which can join several FLV files into one FLV or directly join FLV into one MP4, merge FLV to MP3, merge FLV to AVI, merge FLV to MOV, MPG, DV, MKV, H.265, WebM.

Ad on February 13, 2016:

It shit stuck at 99.9 and the fiile was saved to downloads directory what to do?

SHINee on January 06, 2016:

hi, i'm facing some problem with the IDM, it's work but it just show one connection only when i download it, others was failed. So, it really slow when only one connection. it only have 1 is deceiving data, then the 2nd, 3rd and so forth is disconnet . Previously i did not have this problem, why is it happen ? is any setting error ? Can anyone please give some suggestion for this , thanks a lot.

bapin on November 07, 2015:

thanks man it worked perfectly

thanks again :)

mudasar on October 27, 2015:

my downloading is stuck on 99.05% than shows this error,

" An error occurred during download. Please try again.


HTTP/1.1 404 Not Found"

i have checked the server file it is not removed.

it is a flv file and its downloaded parts are 650 i join them but media does not play. ????

can you help

worked on October 02, 2015:

worked like magic, thanks..

renz on September 19, 2015:

bro ur a lifesaver.....tnx for the solution

Amlan on September 17, 2015:

If the above solution doesn't work for you, then you may consider downloading only through a single connection. That way, this problem won't arise altogether.

toheeb azeez on August 08, 2015:


Patiks on August 06, 2015:

I am downloading windows 10 through idm and it stops at 89% .... Is it useful for os download........

Luhur Septiadi on July 14, 2015:

Can i ask you something? When the Download bar reaches 99%, while i am playing some games. The Computer, Freeze. It force me to Shut it down manually. After rebooting. I try to resume it. Apparently, the file is downloaded at the folder. But the the IDM want to retry the download from beginning, So i stop the download process. And the size is what makes me anxious.This part file size is different compared to another part of file. The other part file size (All of them that are not distrupted) is 2.048.000. And this file size is 2.048.001. So i try to Unzip it (Rar Part) and there's no problem in "unzipping". My question is. Are these files are corrupted or succesfully downloaded?

anil on June 25, 2015:

i download 11 gb file using idm when download 100% my pc suddenly restart and download from the 12% plz help

Sudhanshu on June 22, 2015:

And Also Sir I Think My Corrupted File Is Of 0 Kb So I Can't Split It Please Help Me !!!!

Sudhanshu on June 22, 2015:

I Downloaded Andriod Studio To Develop Andriod Apps But This Studio Request Me To Download Java Develping Kit

So I Go to The Official Site Of Java Oracel And Download 7 Which If Of 138 MB I Started Downloading. Since It Was A Non Resumable Link So I Have To Download On One Connection I Done That But It Stuck It At 99.97% I Was Thinking Its May My Mistake So I Downloaded This File Again But Same Problem Happen..

Now Then I Move To Java 8 Update 45 Which Is Of 175 MB But Again It Stuck At 99.98% . I Am Sick And Tired Of All These Thing..

Please Tell Me How To Download Complete And Don't Re command Me To Download Again Because I Already Know That

surya on June 20, 2015:

not working once i press the resume download it is starting from the beginning

Lakmal on April 13, 2015:

Awesome trick dude! worked Perfectly!!!!! Thanks!!!!!!!!!!!!!!!! :D

Amit on March 18, 2015:

You are my hero....... Thank..... you...

You have saved my ass....

It worked very fine.....

M A Y S Perera (author) from Anuradhapura, Sri Lanka on February 08, 2015:

hey people article just updated with video tutorial. Really sorry about my laziness :D

IDM sucks! on February 04, 2015:

I once tried to buy IDM. They refunded my money and deactivated myserial because I bought through a VPN to protect my privacy. Screw IDM. They suck donkey balls. Try Jdownloader. It is a good, free downloader and it will even auto extract the files. Google adware free jdownloader 2 and get the offline installer without ad ware.

M A Y S Perera (author) from Anuradhapura, Sri Lanka on January 30, 2015:

not every time. depend on your internet connection and download link :)

liz on January 30, 2015:

when u reach 99.9% and u must stop the download and resume will be 100%

shokoy on December 25, 2014:

rixpro, my video downloads are compled 100%. but when i watch the movie it is corrupted usually in the middle of the movie, it jumps to the end.. the middle part cannot be played.. this usually happens to movies i downloaded which have stopped in the middle and i just resumed the download ok until it finish the download.. theres no more temp files to split and join since it 100% completed already.. how do i resolve this problem? i'm using IDM 6.21 build 15..

Shantohasibul on November 28, 2014:

plz make a video....:(

MichaelPangilinan on July 06, 2014:

Hahaha! it really works

lil on June 24, 2014:

helo, I found my complete download in temporary file, how can I convert it completely

dev on June 12, 2014:

Hi, good tips.

My doubt is , sometimes the file has been completely downloaded, but broken inside. That means the video just stops in between the playback. It happens for FLV videos mostly.

How to solve this?

please reply :



naufal96 on May 20, 2014:

excuse me.....which file needs to be splitted? file prt 1 ,2 or 3

Trojan on April 29, 2014:

it's failed/not work my file has gonna be corrupt after finish resume download :(

nilesh on April 28, 2014:

my download gets corrupted at any point of time mostly 70% and then it downloads from start with resume capability as no can your process fix this error

stfu on February 15, 2014:

sjkt stfu this is a very clever solution. but its not for ppl like you sjkt

SJKT on January 02, 2014:

This all is a shit!!!!!!!!!!!!! This is no olution at all!!!! specially for this issue... HJsplit join the file only of .001 format..... he can't choose any other format to join............. IDM didn't download file in .001 format!!!!!!!!!!!

Dishan on December 11, 2013:

i can't understand anything

seghier on November 30, 2013:

thank you ; i have problem like that but idm delete all temporary files and i need to try downloading again

Vidhyasharan on November 22, 2013:

Thanx brother

ChaZ on November 02, 2013:

Works fine for stream-packet oriented files (videos), but it fails for softwares as any corrupt bit leads to malfunctioning of the software system.

Kang Gilang on October 30, 2013:

Thanks you so much, it's very helping for me

Gurmat on October 28, 2013:

My download was stuck at 99.99%. But i found the complete file in the download directory.

sunny on October 06, 2013:

give the video plzzz

M A Y S Perera (author) from Anuradhapura, Sri Lanka on August 08, 2013:

Thank you @Gaurava Mishra for stop and commenting on my hub :)

Gaurava Mishra on August 08, 2013:

Thanks Buddy... Its working very well

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