I've dealt with the error code 0x80070035 a few times before, and it can definitely be frustrating. Based on your description, you've already made a great start by checking the network path, firewall, and sharing settings. Here are a few more steps you might try:
Network Location: Ensure that both your computer and the device with the shared drive are set to the same network profile, ideally "Private" if you're at home. Sometimes being on a "Public" network can restrict access.
IP Address Access: Instead of using the hostname to access the shared drive, try connecting using the IP address. This can sometimes bypass issues related to DNS mismatches or resolution errors.
Credential Manager: Clear any old credentials stored in the "Credential Manager" on your Windows system for the network share and try adding them again. Sometimes stale credentials can cause access issues.
SMB Protocols: As newer Windows updates sometimes disable older SMB protocols for security reasons, you might need to enable "SMB 1.0/CIFS File Sharing Support" if you're accessing older network devices. You can do this through "Windows Features" in the Control Panel, although it's worth noting that keeping SMB1 enabled poses a security risk.
Local Security Policies: Check the Local Security Policies (secpol.msc
), under Local Policies > Security Options. Ensure that "Network security: LAN Manager authentication level" is set to "Send LM & NTLM - use NTLMv2 session security if negotiated".
Firewall and Antivirus Software: Sometimes, third-party security software can interfere even when Windows Firewall is turned off. Temporarily disable any such software to test if it resolves the issue.
Hopefully, one of these suggestions helps you resolve the error. Let me know if you get it working or if there’s anything else you need assistance with!