Thank you all for your assistance. It turns out that this was a Group Policy issue. For anyone who might see this and have a similar setup, this is what I had to do in order to access my Synology NAS:
Computer Configuration –> Policies –> Windows Settings –> Security Settings –> Local Policies –> Security Options –> Microsoft Network Client: Digitally sign communications (always): Disabled
Computer Configuration –> Policies –> Windows Settings –> Security Settings –> Local Policies –> Security Options –> Network security: LAN Manager authentication level: Send NTLMv2 response only
Thank you!
Brian