Application Handlers
Hi All, I have been on the struggle bus lately trying to get the application handlers set properly in our GPO. I am trying to get PDF, webp, avif to open in browser, and jnlp to auto launch Java. Any help will be greatly appreciated!
{"application/pdf":{"action":3,"extensions":["pdf"]},"image/webp":{"action":3,"extensions":["webp"]},"image/avif":{"action":3,"extensions":["avif"]},"application/x-java-jnlp-file":{"action":4,"handlers":[{"name":"javaws.exe","path":"C:\\Program Files (x86)\\Java\\jre-1.8\\bin\\javaws.exe"}],"extensions":["jnlp"]}}
Solution choisie
Yeah, you shouldn't need to modify anything for the other stuff.
And yeah, those should definitely work for jnlp.,
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The actions need to be actual names not numbers.
Have you taken a look at Handlers here?
https://mozilla.github.io/policy-templates/#handlers
Also, JNLP only works on the ESR (long story)
Thank you for that information! So the handler action can be a number in the local Handlers.json in the local profile, but not in the GPO, got it. I guess there is simply not an action for "open in browser" or "handle internally"..?
> I guess there is simply not an action for "open in browser" or "handle internally"..?
Yeah, I figured most of those would just happen by default. Have you found a case where I need to add it?
I'm guessing webp, avif, and PDF are, by default, set to open in browser and my broken policies are changing them to save to file? So I just need to set a GPO handler for JNLP only, I think (I am on ESR102.7) This should work for the JNLP handler GPO, right? Thanks again for your time and support!!!
{
"mimeTypes": {
"application/x-java-jnlp-file": {
"action": "useHelperApp",
"ask": false,
"handlers": [{
"name": "Java(TM) Web Start",
"path": "C:\\Program Files (x86)\\Java\\jre-1.8\\bin\\javaws.exe"
}]
}
},
"extensions": {
"jnlp": {
"action": "useHelperApp",
"ask": false,
"handlers": [{
"name": "Java(TM) Web Start",
"path": "C:\\Program Files (x86)\\Java\\jre-1.8\\bin\\javaws.exe"
}]
}
}
}
Modifié le par Chris Wilkerson
Solution choisie
Yeah, you shouldn't need to modify anything for the other stuff.
And yeah, those should definitely work for jnlp.,
Thank you so much, Mike!