If you’re encountering the System32 SysMain.dll error in Windows 10, you need to determine the program causing this problem.
You might want to disable startups, restore your system to an earlier point of time, overwrite corrupted system files with original versions and perform a malware scan to see if either / some of these steps help matters.
Disable Startup Items
Perform a clean startup to troubleshoot problems caused by faulty startups.
- Click the Search Box on the Taskbar, and type Task Manager.
- Open the Task Manager program from the Search Results.
- Click the icon named More details.
- Right-click an item you want to disable.
- Click Disable.
Perform Registry Scan
Computer programs are dependent on the Windows Registry, which is a hierarchical database that contains all kinds of program configurations. Any changes made to a software application are stored in the Registry, which programs access time-to-time. An error may occur when a program fails to retrieve the required information due to missing entries or corruption of the information.
Perform System Restore
Undo any recent changes that might have been made to your system settings and configurations using System Restore, a feature that helps you restore your computer to a point in the past.
- Right-click This PC icon; select Properties.
- Now click the Advanced system settings link in the left panel of the new window.
- You will now get the System Properties dialog on your screen. Click the System Protection tab.
- Click on System Restore.
- Select either the recommended system restore point or select the Choose a different restore point option to go for a system restore point of your choice.
- Click Next; follow the on-screen instructions to complete the restoration process.
Perform System Scan
One of your operating system files has been either deleted, moved or renamed. Run a full scan to resolve the corruption of your system files.
- Press Windows Key + X; choose Command Prompt (Admin).
- Type the following command and press Enter:
SFC /ScanNow - Your system files will be scanned and restored.
Run Antivirus Scan
If none of the above-mentioned steps help, chances are that your computer has been affected by a virus. Perform full scan by using a reputed Antivirus program. Please note that the following steps may vary from program to program, however, the main theme of downloading and installing an Antivirus and updating its virus definitions and finally running a full system scan will remain the same in all cases.
- Download and install the Antivirus program you wish to use.
- Update the virus definition signatures of the Antivirus program.
- Now click the Scan icon in the main user interface.
- Click the Full Scan tab.
- Click Run Scan button.
Uninstall Faulty/ Incompatible App
If you’re encountering this error after you recently installed a particular software program, that program probably is incompatible or faulty. Uninstall it as shown below:
- Click Start | Settings.
- Click System icon.
- Click Apps & Features tab.
- Sort the applications by their date of installation.
- Uninstall recently installed apps one by one. Click an application entry, and then select the Uninstall button.
- After successful uninstallation, reboot your computer.
