Users cannot play more than a few seconds of VM from UCP

At least some of our users are having an issue with the UCP where a VM will only play the first two or three seconds and the stop. This happens in both Chrome and Firefox. It sounds exactly like what was described in this forum post: All users cannot play more than a few seconds of VM from UCP. It has been happening for a while on at least one extension, but now another user has reported the same issue, so it is at least two, not sure how many more might be affected.

I also note an error in the console, similar to what was reported in this Issue: For me the console error is “GET about:blank net::ERR_UNKNOWN_URL_SCHEME”

Has anyone else been experiencing this?

User Control Panel
FreePBX Framework


I have now the same issue. Did you found a solution?


No. Somewhere I had found a suggestion that someone was able to resolve it by creating a new user, but that did not work for me.

Noting that there was a recent Issue related to this that is marked as resolved, but unfortunately, it did not resolve the issue for me.

Also, here is the previous related issue.

I can confirm the symptoms from both cases. As a workaround, for now (and a while) my users have either been using emailed audio files or calling into the system and listening to their VMs that way.

Same problem here.

Funny thing is, that for some users it works fine, but for others they can’t play the recordings. I think it’s some Windows 10 thing. I’m running Framework and UCP It’s the case with any and every browser. On one Windows 10 it works, on another it doesn’t.

If I check the error console in the browser whilst the recording plays and fails, I see:

HTTP “Content-Type” of “text/html” is not supported. Load of media resource about:blank failed.

It looks like the streaming is failing.

So, the voicemail that plays is on Windows 10 Pro 1909, and it’s not working on Windows 10 Pro 20H2.

Here’s another related thread: User Portal Voicemail Will Not Play

(I know, I know, I need to update… and I will, but I have to plan the time for it…)

Anyone have a clue? Could it be a Windows issue?

Voicemail Module v15.0.18.31 fixes the issue I was having:

My issue was definitely not Windows related; it persisted across every OS and browser that I tried.

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