What to do when IDM doesn't download Youtube videos ?

Hello guys , I have been listening so many questions about IDM , but the day before yesterday , my friend asked me that his IDM is not downloading Youtube Videos . So I am having a solution for that .
You have to fix IDM extension for that .

Just follow these steps :-
1)First of  all open the Browser that you are using (i.e. Chrome or Firefox) .

2)Then Check Extensions Or Add-Ons in your Browser .

Now , Remove or Disable the Add-On or Extension named IDM Integration Module from your browser . The first ScreenShot is for Google Chrome and the Second is for Mozilla Firefox .

Now , you are to just Search for a file named IDMGCext.crx in your Local Disk-C .

Then drag it to your Browser's Extension's Window .i.e. Google Chrome .

 Now you can see that Chrome is asking for your permission to add the Extension .
Just Click on Add.
                                     

Now you are done .
                                       
                                          
Proof -