I had the same problem, but this works (so far) for me:

1- create a new 3D unity project

2- download the vuforia code from their git link (it is version 9.8.8)

3- extract the file to a fold Outside your project folder

4- Go to your project in unity: Window -> Package manager -> Click the + sign -> Add package from disk -> select the package.json file in the folder you just extracted

Now the package will be added, but the Vuforia menu will not appear. So to access the vuforia config for example, just right-click in hierarchy -> vuforia -> AR Camera, then click on it, and in the inspector scroll down and click the config button.

Hello!

I have the same problem( After adding Vuforia to Unity Project in Console I see two types of errors:



Plugins: Failed to load 'D:/AR/New1/Library/PackageCache/com.ptc.vuforia.engine@278bbd901904-1632536113000/Vuforia/Plugins/Windows/x64/UnityDriver.dll' because one or more of its dependencies could not be loaded.



Plugins: Failed to load 'D:/AR/New1/Library/PackageCache/com.ptc.vuforia.engine@278bbd901904-1632536113000/Vuforia/Plugins/Windows/x64/FileDriver.dll' because one or more of its dependencies could not be loaded.



Vuforia Engine Support, Please help to find solution!!



Camera: USB2.0 HD UVC WebCam

Regarding 2.) - yes, I have followed the instructions from these articles. First tried them in an existing Unity project, then in a new one, the error occurs regardless.

And I also don't use any VPN connections. 

Hi,

there are 2 points:

1.) the one link mentioned in one of the posts was incorrect - here the correct link https://library.vuforia.com/articles/Solution/file-driver.html

2.) the last 2 posts mentioned installation issue for Vuforia Engine in a new Unity project when we try to follow the articles below , right?

https://library.vuforia.com/articles/Training/getting-started-with-vuforia-in-unity.html#intro

https://library.vuforia.com/articles/Solution/vuforia-engine-package-hosting-for-unity.html

I tested it but it seems to work, no issue on windows 10 machine. If you use some VPN connection , then please check again when you disconnect or suspend the VPN connection.

Will check internal resources if there some know issues regarding the mentioned error message

BR

Vuforia Engine Support

I also have the exact same issue on Unity 2021.1.0f1. The error message is:

Failed to load /Library/PackageCache/com.ptc.vuforia.engine@efa13d4486/Vuforia/Plugins/Win64/FileDriver.dll' because one or more of its dependencies could not be loaded.

I have git installed and also get the error with all the different ways to add Vuforia Engine to Unity.

Hi,

if you have an windows system (according to the message it seems to be a windows machine) - could you check,please, if git is installed on your machine.

please refer to https://git-scm.com/downloads

BR

Vuforia Engine Support

Ok yes! Having same exact issue on Unity 2021.1.7f! Have tried downloading the Vuforia SDK in all the ways possible (through git url, manually and ALSO with unity script) Windows 10. Some help would be majorly appreciated. 

Error message: Downloads/VuforiaPackage/Vuforia/Plugins/Win64/FileDriver.dll' because one or more of its dependencies could not be loaded.

still facing the same problem in Vuforia 9.8.8 with Unity 2019.4.8

To anyone who still encounters with this problem, maybe check if you have python installed already.

I checked the prerequisites on this link https://library.vuforia.com/articles/Solution/file-driver.htmlhttps://library.vuforia.com/articles/Solution/file-driver.htmlhttps://library.vuforia.com/articles/Solution/file-driver.html. The errors solved after I installed python.

Hi @ santosusan,

DId you upgrade to a newer version?

Please feel free to download the version from here: https://git-repo.developer.vuforia.com/ and import it manually.

Steps are described here:https://library.vuforia.com/articles/Solution/vuforia-engine-package-hosting-for-unity.html

Thank you.

Vuforia Engine Support

Is it fixed? I'm also facing the same issue for Win10, Unity 2020.3 version. Can anybody share a working 'Filedriver.dll' file so I can try.

I've uploaded the error ss and the manifest file in the Filedriver.dll

Regards.

I am also facing same issue and not having any ; symbol in my project path.

Did you solve it? How? I have the same problem

i have got same error Plugins: Failed to load 'D:/com.ptc.vuforia.engine-9.5.4/package/Vuforia/Plugins/Win64/FileDriver.dll' because one or more of its dependencies could not be loaded.

which path are you talking about?

Can you help me out in solving it.

Solved.

Problem was in ";" in path to project.

So, i tried different versions of Unity (2019.2 and 2019.3), different versions of Vuforia (8.6.10 and 9.0.12) and it always the same.

2 errors about Plugins: Failed to load

Screenshot attached.

Platform: Win 10

What am i missing?