To fix DLL problems for free, try restarting your computer in case the problem only affects the current session, restore the missing DLL files from the Recycle Bin if you deleted them accidentally and perform a full virus scan to detect if the issue is caused by malware that masquerades as a DLL problem. If these solutions don’t fix the problem, try reinstalling the software that reports DLL errors, or use the sfc /scannow command to reinstall system DLL files.
If the problem persists after restarting the computer, access the Recycle Bin from the desktop or via the computer desktop screen by double-clicking on it, right-clicking on the missing DLL file if it’s present, and then selecting the Restore option. If there are no DLL files, use an anti-malware solution, such as Malwarebytes, to scan the computer and remove any detected threats.
To determine which software reports the DLL error, uninstall it via the Control Panel, and install it again using the original setup file. If the problems are related to system DLL files, open the Accessories folder via the Start menu, right-click on Command Prompt, select the Run As Administrator option, type “sfc /scannow” and press Enter to force the operating system to reinstall corrupted or missing DLL files from the system cache. As a last resort, download the missing DLL file from a website such as DLL-Fixer.com, but make sure to run a virus scan on the file prior to placing it in the System32 folder.