Notes about the DSY file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The DSY file type is primarily associated with 'AJC Directory Synchronizer' by AJC Software. AJC Directory Synchronizer lets you compare and synchronize two directory structures.