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Why can't I safely eject my flash drives when running Firefox?

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New Contributor

Why can't I safely eject my flash drives when running Firefox?

When I running/browsing internet on Firefox. I can't safely eject my flash drives. each time, I get this:

"Problem Ejecting USB Mass Storage Device- This devise is currently in use. Close any programs or windows that might be using the device, and try again."

The flash drives aren't being used much of the time, except for when I save something to them. Nothing is using them and all saves and other stuff are completed, but I can't safely eject them when Firefox is running. I have to close Firefox to safely eject them. I can in safe mode, however. Is a weird glitch or something else going on with Firefox?

1 ACCEPTED SOLUTION

Accepted Solutions
New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

I found the culprit using Process Explorer. It's RecordingManager.exe which is part of the RealDownloader 1.3.0 extension from RealNetworks inc. I could see it was referencing my USB drive letter, though have no idea why it was.

Killing off the RecordingManager.exe process while leaving FF running meant I could now eject the USB drive.

Disabling the extension in FF prevented the problem from re-occurring.

18 REPLIES
Site Moderator

Re: Why can't I safely eject my flash drives when running Firefox?

This isn't something Firefox would cause unless you are using Firefox portable on the flash drive or something like that. Have you reset firefox (potentially this could be an extension) Refresh Firefox - reset add-ons and settings

New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

I'm not sure what Firefox portable is, but I don't it or anything like it on my flash drives.

Site Moderator

Re: Why can't I safely eject my flash drives when running Firefox?

Then unless Firefox is accessing something stored on your flash dirves ( you didn't put you firefox profile there did you? or a picture Firefox is viewing, or anything like that? then this is unrelated.

Note you can just pull a flash drive out of the pc without safely ejecting it and it will work just fine, so long as you aren't using it.

New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

The flash drives are in idle mode. As far as I know, Firefox isn't accessing something stored on my flash drives. I don't have my Firefox profiles on them. I didn't have a problem on the older versions of Firefox before version 17 and up.

New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

I have just found this problem too on one of my machines - Windows 7 Pro 64 bit, running Firefox 18.0 (32 bit of course).

I have a number of add-ons and extensions but none of them should be accessing the USB drive, and FF is installed on the pc.

I keep getting the 'USB drive in use' message until I close FF - I've only just worked out that it was FF that was the problem.

Support Forum Moderator

Re: Why can't I safely eject my flash drives when running Firefox?

Have either of you downloaded anything to those USB "devices" using Firefox?

If a "download" still appears in the Firefox Downloads window, Firefox will "keep track" of that download as long as it is in the Downloads window. You can "clear" that one download and see if that was causing the USB "device" to appear to be "in use". Note, you may need to restart Firefox after clearing that download from the Downloads window to stop the "in use" message.

New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

Like I said, I didn't have a problem before Firefox version 17 and up. I do everything I did before, too. I cleared the cache and cookies often and I cleared the downloads window after I'm done downloading.

I don't have to download anything from Firefox at all and still get the problem. If I just plug in the USB device and click safely eject, but I can't.

I have the same plug-ins and extensions as I did in version 16 and below.

New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

Same here.

If I start Firefox, go to a web-page, then insert the USB drive, look at a folder in the USB drive using Windows Explorer without having done anything else with FF at all, then try to eject it, I cannot. As soon as I close FF, I can.

New Contributor

Re: Why can't I safely eject my flash drives when running Firefox?

I found the culprit using Process Explorer. It's RecordingManager.exe which is part of the RealDownloader 1.3.0 extension from RealNetworks inc. I could see it was referencing my USB drive letter, though have no idea why it was.

Killing off the RecordingManager.exe process while leaving FF running meant I could now eject the USB drive.

Disabling the extension in FF prevented the problem from re-occurring.