Windows Error 101
ERROR_EXCL_SEM_ALREADY_OWNED: The exclusive semaphore is owned by another process.
Jul 13, 2015
Corrupt download or incomplete installation of Windows Operating System software.
Corrupt Windows registry keys associated with Windows Operating System.
Virus or malware infection that has corrupted Windows system files or Windows Operating System-related program files.
Another program maliciously or mistakenly deleted Windows Operating System-related files.