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Firefox doesn't know how to open this address, because one of the following protocols (ms-word) isn't associated with any program or is not allowed in this cont

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Unable to open Word and Excel documents from within SharePoint. This has never been an issue but now the error message is shown. "Firefox doesn't know how to open this address, because one of the following protocols (ms-word) isn't associated with any program or is not allowed in this context." The documents should either open in the browser or trigger the desktop app. Installing older versions hasn't fixed this.

Looking for solutions, thanks

Unable to open Word and Excel documents from within SharePoint. This has never been an issue but now the error message is shown. "Firefox doesn't know how to open this address, because one of the following protocols (ms-word) isn't associated with any program or is not allowed in this context." The documents should either open in the browser or trigger the desktop app. Installing older versions hasn't fixed this. Looking for solutions, thanks
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jscher2000
  • Top 10 Contributor
8837 solutions 72222 answers

Hi mrs.von, does the workaround in the following thread help:

https://support.mozilla.org/questions/1265375#answer-1239993

Hi mrs.von, does the workaround in the following thread help: https://support.mozilla.org/questions/1265375#answer-1239993
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Question owner

We tried that before I posted here and that unfortunately doesn't work either. Several users tested this. This wasn't a problem until recently.

We tried that before I posted here and that unfortunately doesn't work either. Several users tested this. This wasn't a problem until recently.
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Question owner

To clarify, when selecting the link, Firefox adds the following to the front of the actual link in the URL

ms-word:ofv|u|https:// or ms-excel:ofv|ofc|u|https://

And the page with the error messages appears.

When removing ms-word:ofv|u|or ms-excel:ofv|ofc|u| the links work and do as expected. This happens on a Mac and PC.

To clarify, when selecting the link, Firefox adds the following to the front of the actual link in the URL ms-word:ofv|u|https:// or ms-excel:ofv|ofc|u|https:// And the page with the error messages appears. When removing ms-word:ofv|u|or ms-excel:ofv|ofc|u| the links work and do as expected. This happens on a Mac and PC.
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Romy Fitschen 0 solutions 4 answers

I have had this problem for a couple of months. The message I get is the same. I have uninstalled, reinstalled and tried countless suggestions. Sadly I have to stop messing with this and switch to another browser which is upsetting to me as I don't like to use microsoft or google. This is really frustrating.

I have had this problem for a couple of months. The message I get is the same. I have uninstalled, reinstalled and tried countless suggestions. Sadly I have to stop messing with this and switch to another browser which is upsetting to me as I don't like to use microsoft or google. This is really frustrating.
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Question owner

As it turns out you can no longer sync folder with Microsoft OneDrive either. The URL adds the following: odopen://sync

This makes Firefox unusable for Office 365. A real real shame.

As it turns out you can no longer sync folder with Microsoft OneDrive either. The URL adds the following: odopen://sync This makes Firefox unusable for Office 365. A real real shame.
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Question owner

I have checked with Microsoft and they said there is nothing they can do about this. If this is not fixed then Firefox will render useless for hundreds of thousands of work devices.

I have checked with Microsoft and they said there is nothing they can do about this. If this is not fixed then Firefox will render useless for hundreds of thousands of work devices.
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Valerie 0 solutions 1 answers

I am having the same issue. Removing ms-word:ofv|u| as indicated above by mrs.von downloads a copy of the file and does not permit co-authoring in the documents.

There are workarounds (e.g., opening the document in the browser view, then opening Word to access the file through the recent documents), but these are time consuming and impractical. Looks like there's an issue with how Firefox handles these links.

As indicated above, if this is not resolved, I will have to switch to a different browser for business use.

I am having the same issue. Removing ms-word:ofv|u| as indicated above by mrs.von downloads a copy of the file and does not permit co-authoring in the documents. There are workarounds (e.g., opening the document in the browser view, then opening Word to access the file through the recent documents), but these are time consuming and impractical. Looks like there's an issue with how Firefox handles these links. As indicated above, if this is not resolved, I will have to switch to a different browser for business use.
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jscher2000
  • Top 10 Contributor
8837 solutions 72222 answers

Hi Valerie, did you already set up the new preference as described in this post:

https://support.mozilla.org/questions/1265375#answer-1239993

Hi Valerie, did you already set up the new preference as described in this post: https://support.mozilla.org/questions/1265375#answer-1239993
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Romy Fitschen 0 solutions 4 answers

Having the same issue - going to have to switch browsers. This is really frustrating....

Having the same issue - going to have to switch browsers. This is really frustrating....
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