Audio not working in win 10 in virtualbox (virtualbox 5.1.2 + guest additions, macbook pro early 2011, osx el capitan)

I installed Windows 10 in virtualbox on my macbook and now speakers and mic are not working with win 10. My problem is mainly with speakers.

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3 Answers

had a similar problem (audio cracking/not working); what worked for me (Xubuntu as Host, VirtualBox 5.2.14) I found on stackoverflow marked off-topic:

1. VirtualBox - open the settings for your Windows 10 machine
2. Go to Audio > Audio Controller, change to 'ALSA Audio Driver' and "ICH AC97" as Controller
3. Boot your Windows 10 machine and disable driver signature enforcement
4. Go to Realtek website, download and install the AC'97 audio codec/driver for Vista/7 ("Vista/Win7 (32/64 bits) Driver only (ZIP file)") onto your Windows 10 machine (run setup.exe)
5. Reboot Windows 10

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Combination that worked for me (Ubuntu Host, Win10 guest) :
In Win10

• install realtek driver In virtualbox
• Host audio driver : PulseAudio
• Audio Controller: Intel HD Audio

I got it to work by:

1. Follow the answer by definitely undefinable
2. Before rebooting, opening the windows device manager (Win + R, enter devmgmt.msc and press Enter)
3. Find the Multimedia Audio Controller in one of the categories. It should be displayed as missing a driver (yellow exclamation mark in the icon)
4. Right-click on the listing and select Update Driver Software...
5. Select Browse my computer for driver software
6. Browse to the unzipped Realtek driver folder. Make sure Include Subfolders is checked. Press Next.
7. Select Install this driver software anyway.
8. Reboot the VM.

I furthermore had to change the Virtualbox settings back to PulseAudio, as I am using this on my Ubuntu 18.04 setup.

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