The file x3daudio1_0.dll is a component of Microsoft DirectX. The error indicates the file is either missing, or it is renamed, moved, deleted or corrupted.
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Alternative manual troubleshooting steps are given below:
Restore Deleted File
Check the contents of Recycle Bin folder to verify whether the file is moved to Recycle Bin or not. Use the Search feature by pressing F3 key of your keyboard.
Use SFC Tool
SFC is an abbreviation of System File Checker. The tool scans your hard disk for corrupted system files and restores them using the Windows installation disc.
Insert Windows installation disc, use “SFC /ScanNow” command in the Command Prompt tool. Ensure you open it as administrator using Ctrl + X key combinations.
Resolve File Registry Entries
Using command-line utility repair file Registry entries to make the program function properly. Each OLE/ DLL file is registered in your system database. Use “regsvr32 /u x3daudio1_0.dll” command to unregister, and “regsvr32 x3daudio1_0.dll” command to reregister the DLL file.
Rollback your PC Settings
A major change in your system settings could have caused x3daudio1_0.dll issue. Using System Restore utility in Windows, restore your computer to an earlier period of time.
Open System Restore from Search by typing “Restore” and then click “Create a restore point”. In the new dialog, click System Restore button and follow the simple wizard that loads on your screen.