The error “You Must Have an Opus Codec Installed” often occurs when trying to play voice notes, typically indicating that the Opus Codec, responsible for decoding and encoding, is missing from the system. However, this is not the only cause of the issue, as other factors, such as disabled UAC or a problem with the Windows Mixer, can also lead to it.
There isn’t much to discuss regarding the causes; the main thing to ensure is that the Opus Codec is not missing from the system. If it is missing, it will not encode and decode the WhatsApp voice notes, which will result in this error message.
Now that you understand the causes, let’s look at the solutions to this issue. But before proceeding, try restarting your computer or ending the WhatsApp process in Task Manager, and then reopen the WhatsApp application.
1. Download Web Media Extensions
Since the error itself states “You Must Have An Opus Codec Installed” , you should start troubleshooting the issue by installing the Opus codec. Media Extensions is a package that includes all the necessary codecs, including the Opus Codec, which WhatsApp requires to play voice notes.
These extensions support modern media audio formats such as .opus and .ogg, which are commonly used for WhatsApp voice data. By installing the Web Media Extensions, you ensure that your system can handle various audio formats, which should resolve the error when playing voice notes.
- Click the Start Menu and type Microsoft Store .
- Launch the Microsoft Store and search for Web Media Extensions .
- Select Web Media Extensions and click Install .
- Once done, check if this resolved the error.
2. Turn on UAC (User Account Control)
If you have previously disabled UAC (User Account Control) and forgot to re-enable it, this could also be the reason for this error. While UAC shouldn’t be directly related to the issue, many users have reported that enabling the UAC somehow resolves issues with WhatsApp voice notes. Therefore, you should make sure that the UAC is enabled by following these steps.
- Press Win + S to open Windows Search.
- Type UAC and hit Enter to open the Change User Account Control settings.
- Move the slider up to Notify me only when apps try to make changes to my computer .
- Click OK to save the settings.
- Once done, check if the error is fixed by playing the WhatsApp voice notes.
3. Reset the Windows Mixer
Windows Mixer manages the audio for each application. Sometimes, incorrect audio configurations prevent applications from accessing or playing audio correctly. Resetting the Windows Mixer restores the default audio settings, ensuring that WhatsApp can access the audio channels and codecs, including the Opus codec, allowing voice messages to play without interruptions or errors.
- To reset the Windows Mixer , right-click the Sound Icon at the bottom right and select Open Volume Mixer .
- Click Reset to reset the Volume Mixer to default settings.
- Once done, check if the error is resolved while playing WhatsApp voice notes.
Finally, if none of the solutions have worked, try uninstalling both WhatsApp and the Web Media Extensions. Then, restart your computer and reinstall WhatsApp along with the Web Media Extensions to resolve the error.
How to Fix “Printer is in an error state” Issue?
The error “ WinRAR Error: Next Volume Is Required ” usually appears when you’re extracting a multi-part RAR archive and WinRAR can’t find (or can’t correctly identify) the next file in the sequence . This often happens when a volume is missing , stored in a different folder , or renamed in a way that breaks the archive’s expected order .
In this guide, we’ll go over the most reliable fixes confirmed by affected users, along with what each method is doing behind the scenes so you can choose the right one for your situation.
Important: To extract multi-volume archives, you should always start extraction from the first file in the set. This is usually file.part1.rar , or (in older sets) the main .rar file that comes before .r01 , .r02 , and so on.
1. Download and Place the Missing RAR File
WinRAR needs all parts of a multi-volume archive to complete extraction. This error usually appears when one of the volumes in a set like .part2.rar , .r01 , .r02 , .001 , and similar naming formats is missing . Downloading the missing volume and placing it in the same folder as the other parts allows WinRAR to continue extracting normally .
- Look at the error message or review the list of archive parts in the folder.
- Identify which volume is missing (for example, part2.rar , .r02 , .001 , etc.).
- Go back to the website or source where you downloaded the archive.
- Locate and download the exact missing file using the same naming format as the others.
- Make sure the new file name matches the pattern of the rest. Example: If you have file.part1.rar and file.part3.rar , the missing one must be file.part2.rar .
- Move the downloaded missing volume into the same folder as the other archive parts.
- Confirm that all parts are in a single folder before extracting.
- Right-click the first file in the series (usually part1 or the main .rar file) and select Extract Here or Extract to Folder .
- WinRAR should now detect all volumes and continue extraction normally .
2. Manually Browse & Select the Next Volume
Use this method only if the next volume already exists , but WinRAR is failing to detect it automatically. This can happen due to incorrect naming , the file being in a different location , or a temporary file access issue. Manually browsing helps WinRAR locate the correct volume and resume extraction without interruption .
- Right-click the first file in the series (usually .rar or part1.rar ) and select Extract Here or Extract to Folder .
- When WinRAR cannot find the next volume, it will show the “ Next Volume Is Required ” message.
- A small window will appear, allowing you to manually select the next volume .
- Use the file explorer window to locate the folder where the other archive parts are saved.
- Select the next part based on the naming order (example: select file.part2.rar after file.part1.rar ).
- Make sure the selected file matches the naming format of the archive (no extra characters like (1) and no mismatched numbering).
- WinRAR will resume extraction using the selected volume .
- If additional volumes are missing or stored separately, WinRAR may prompt you again. Repeat the same process until extraction completes.
3. Rename the RAR files in Order
WinRAR relies on a proper naming sequence (such as file.part1.rar , file.part2.rar , file.part3.rar ) to extract multi-volume archives. If a file is named incorrectly, contains extra characters, or is out of order, WinRAR may fail to locate the next volume and show this error. Renaming the files correctly helps WinRAR follow the sequence and extract the archive without interruptions .
Note: Renaming only changes the file name , not the file contents. The goal is to restore the correct sequence so WinRAR can detect the next volume.
- Go to the folder where all the RAR files are saved.
- Make sure all parts of the archive are present and stored in the same folder .
- Check how the parts are currently named . Common patterns include:
file.part1.rar, file.part2.rar, file.part3.rar
file.rar, file.r01, file.r02, file.r03
- Look for files that don’t match the expected numbering pattern (for example, file.part01.rar , file.part1(1).rar , or unrelated names).
- Rename each file so it follows the same order without extra characters or mismatched numbering. Example:
Incorrect: file.part1.rar, file.part3.rar, file.part2(1).rar
Correct: file.part1.rar, file.part2.rar, file.part3.rar
- Make sure the text before the number is exactly the same for all files.
- Only the last part number should change.
- Right-click the first file in the series (usually part1.rar or the main .rar file) and select Extract Here .
- WinRAR should now recognize the sequence and continue extraction normally .
If you still get the same prompt: the archive set is likely incomplete (a part was never downloaded or was removed), or one of the volumes is corrupt and must be re-downloaded from the original source.
