Windows Modules Installer Worker (TiWorker.exe) is a system process responsible for handling Windows updates and installations in the background. It checks for updates, installs them, and performs maintenance tasks related to Windows updates.
The most common cause of error 0xc0000005 is that your system is not able to process the files and settings correctly that are required to run a particular program other than this it could be malware infection, RAM issue, internal files issues, and more.