Sienna Rhodes
Adobe Acrobat Reader is a popular PDF reader with a Read Out Loud feature that can read documents aloud. However, some users have reported issues with this feature, such as no sound or only partial reading of the document. This problem has been observed across different operating systems, including Windows and Mac, and various versions of Adobe Acrobat Reader. Troubleshooting steps suggested by the Adobe community include disabling Protected Mode, updating the trust manager, unchecking Enable Enhanced Security, repairing the installation, and reinstalling the application. While these solutions have worked for some, others have requested clearer instructions or software updates to address this issue.
| Characteristics | Values |
|---|---|
| Adobe Reader version | DC, XI |
| Operating system | Windows 7, Windows 10, macOS |
| Issue | No sound, error message "Cannot find an appropriate player for the sound" |
| Solution | Install Flash Player, disable protected mode, check speaker and volume settings, ensure not a scanned image, check Multimedia Trust preferences |
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What You'll Learn
Check if your device's speakers are on and not on mute
If you're experiencing issues with the audio on your device, it may be that your speakers are muted. To check if this is the case, you'll need to follow different steps depending on your device and operating system.
On a Mac
First, check that your internal speakers are selected and that the Mute checkbox is not selected. To do this, go to System Settings, then click Sound in the sidebar. Click Output, then make sure your Mac model Speakers are selected in the output device list. Make sure the "Output volume" slider is not all the way to the left. If you're using external speakers, make sure they're plugged into the audio output port on your Mac or display and, if necessary, into a power supply. Check for a power switch and volume adjustment on your external speakers and turn them on and adjust the volume if necessary.
On Windows
Check that your audio is playing to the correct audio device, such as your speakers or headphones. Make sure that none of your volume controls are muted. To do this, select and hold or right-click the Speakers icon on the taskbar, then select Open Volume Mixer. You'll see a set of volume controls for your devices. If any of them are muted, you'll see an "x" or a red circle with a line through it next to the volume control. To unmute, select the volume control and adjust to the desired volume level.
On Adobe Acrobat Reader DC
If you're unable to play a sound file on Adobe Acrobat Reader DC, it may be because you need to install Flash Player. This is different from the Flash Player used by web browsers.
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Ensure the volume and pitch attributes are correct
If you are experiencing issues with the sound on Adobe Reader, one thing to check is the volume and pitch attributes.
To do this, first open the application and navigate to the Edit menu. From there, select Preferences, then Reading. Here, you will be able to check and adjust the volume and pitch settings. Make sure that the volume is set to an appropriate level, and adjust the pitch to your preference.
If you are still experiencing issues with the pitch, you can try the following: uncheck the "Use default speech attributes" box. This will allow you to change the pitch and words per minute. If this doesn't work, try going to the Apple menu on your Mac, selecting System Preferences, then selecting Accessibility from the System Preferences window. From there, you can change the speaking rate.
Additionally, you can adjust the volume from 1 to 10, with 7 being the default setting. You can also deselect the "Use default voice" option to choose a different voice from the Voice menu. However, please note that the available voices will depend on the voices installed on your operating system.
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Install the appropriate flash player
If you are having issues with playing sound files on Adobe Acrobat Reader, you may need to install the appropriate Flash Player. This is because when an audio file is embedded into a PDF with Adobe Reader/Acrobat, you need to have Flash Player installed to listen to it.
Firstly, check which version of Adobe Reader DC you have installed. You can do this by following the instructions on this page: https://helpx.adobe.com/acrobat/kb/identify-product-version.html. It is important to note that Adobe has ended support for Flash Player since 31 December 2020 and blocked Flash content from running in Flash Player beginning 12 January 2021. Therefore, you should check that your Flash Player is up to date.
If you are using a newer version of Adobe Reader DC, you may need to install an older version of Flash Player. This is because, in some cases, newer versions of Flash Player may not be compatible with Adobe Reader DC. For example, one user reported that they were unable to load a multimedia file within a PDF despite having installed the latest version of Adobe Flash Player 26. They noted that their friends who were using older versions of Flash Player were able to load the file.
To resolve this issue, you can try installing "FP 26 for Firefox - NPAPI" from the following link: http://get.adobe.com/flashplayer/otherversions/. After installing this version of Flash Player, relaunch Adobe Reader/Acrobat. This should fix the issue.
It is important to note that some users have reported that installing Flash Player did not resolve the issue. Additionally, Adobe strongly recommends that all users immediately uninstall Flash Player to protect their systems. Open standards such as HTML5, WebGL, and WebAssembly serve as viable alternatives to Flash content.
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Check if Read Out Loud works when Protected mode is disabled
If you are experiencing issues with the Read Out Loud function on Adobe Reader, one suggested fix is to disable the "Protected mode at start-up" setting. This setting can be found under the Edit menu, then Preferences > Security (Enhanced). After disabling this setting, check if the Read Out Loud function works as expected.
It is recommended to re-enable the "Protected mode" setting after testing, as disabling it is only suggested for testing purposes.
Disabling and re-enabling security settings has been noted as a fix for the Read Out Loud function not working as expected. Additionally, it has been noted that changing the default voice to Zira's voice has also helped resolve this issue for some users.
If you are experiencing issues with the Read Out Loud function on Adobe Reader DC, it may be helpful to check if your device meets the minimum system requirements for the software.
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Update the trust manager and uncheck Enable Enhanced Security
If you are experiencing no sound on Adobe Reader, there are several possible reasons and solutions. One common issue is that Adobe Reader requires Flash Player to play sound files, so ensure you have Flash Player installed.
Another solution to try is to update the Trust Manager and uncheck 'Enable Enhanced Security'. The Trust Manager is a feature in Adobe that allows users to manage the security risk of internet access by controlling which sites can be accessed via the Internet Access panel. To update the Trust Manager:
- Navigate to the Trust Manager settings in Adobe.
- Locate the Enhanced Security preferences, which should be stored under TrustManager.
- Uncheck the box for "Enable Enhanced Security".
- Note that the Enhanced Security feature is designed to limit document behaviours that are perceived as vulnerabilities or security risks, so disabling this feature may increase the security risks of your computer and its data. Consult with your system administrator or carefully consider the risks before making changes to Trust Manager settings.
- Additionally, cross-domain access requires specifically trusting those domains as Privileged Locations, which are designed to let users specify trusted content that should be exempt from security restrictions.
By updating the Trust Manager and unchecking "Enable Enhanced Security", you may be able to resolve the issue of no sound on Adobe Reader.
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Frequently asked questions
This could be due to a few reasons. Firstly, check that your speakers are not muted and that the volume settings are correct by going to Edit > Preferences > Reading. You should also check that your audio functions are working normally for other programs.
Try disabling the Protected Mode by going to Edit > Preferences > Security > uncheck "Enable Protected Mode at Startup". Please note that disabling Protected Mode may expose your system to security risks, so remember to enable it again after testing.
Yes, try repairing Adobe Reader by going to Help > Repair Installation. You can also check for any pending updates under Help > Check for Updates and reboot your machine after updating.
You can try reinstalling Adobe Reader, or using a different PDF reader with text-to-speech functionality.
