Troubles with Auxiliar App VdhCoAppSetup-1.2.4

[Carlos Villegas]

I have a problem, I work with Chrome and yesterday I tried to download a video from a page where always I've downloaded and Surprise, not work. Say you must install and Auxiliar App, I've installed but appear this msj,  Failed to start native messaging host.

What can I do.

Thank you.

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[jcv...@gmail.com]

Hi,

never had this issue, i'm a bit lost. I tried to search a bit, may be try some of this : https://stackoverflow.com/questions/27042789/native-messaging-host-not-starting-when-opening-chrome

jerome

[Lore K]

I have just started having this problem. Out of the sudden. Yesterday it worked perfectly, today its an error. On Chrome, Windows 7.

Changed nothing on my PC, when tried to download a video via the extension I had error that the Companion App is not found and must be installed.

 I assumed that there is a new update, so I installed it again. However, on Video DownloadHelper extension settings page I have at version 7.3.7.0 and on Companion App : not installed, with error  " Checking companion app returned: Failed to start native messaging host. "

On Chrome it says "Failed to start native messaging host.

Check whether you have sufficient permissions to execute the file."

I cleared the Cache, I uninstalled the companion app, I uninstalled the browser extension, installed the companion app in another place (not in Program Files). Same error. It finds the companion app but it fails to start the messaging host.

I have the regedit value set on HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\NativeMessagingHosts\net.downloadhelper.coapp  and it directs to the chrome.net.downloadhelper.coapp.json file (with no quotes).

I also have the environment variable ComSpec set to C:\WINDOWS\system32\cmd.exe  and accessible to Chrome.

On Firefox it works perfectly.

Found companion app: VdhCoApp 1.3.0

Companion app binary:  Points to the new place I installe the companion app.

  

Please advise!

[jc vdh]

hi,

sorry it's beyond my knowledge. And I don't have a windows 7 for test, hope some other users may help.

jerome

[Brian Morris]

I also have this problem on Chrome on Mac, right now. it seems like the co-app is usually / often broken on Mac

i wonder if it is system security denying it permission??

[Brian Morris]

Solved Here : it was permissions problem... for me, I fixed by doing the "user" installation. Actually I did this by hand, copying the helper app from /Applications to <my home directory>/Applications, sudo chown -R the app and then the user install line from the help page. I had to copy the pathnames from the finder into Terminal. 

Dear Developers - please put a User install option into the pkg installer, and make sure it checks and repairs permissions. 

[jc vdh]

thanks for the feedback!

jerome

[Lore K]

Thank you for your update!

Could you please advise how would a Windows user proceed to fixing this? I have the VdhCoAppSetup-1.3.0.exe file. Simply running it as administrator or installing it somewhere else (on D:\ for example) isn't a fix.

Please help

[mjs]

I had no problems in windows 7 as well as latest versions of the extension & Companion app.I performed a download with no error message.

The slight difference is that I used the chromium browser which chrome is based on.Maybe you need to be logged into or running windows as an administrator.