Symptoms:
– Below Errors might be seen when Client at Branch office tries to map the Network Drives from Win 10 machines.

Errors:
– SMB3 acceleration is disabled/unsupported on the partner unit 
– Signed Session. Reason: Secure Connection to the peer unit does not exist. To configure secure partner settings. Go to 'Configuration - > Secure partners'.

Below are the possible solution/workaround for this issue:
    – Protocol version between Win 10 to Win 2016 is SMB 3.1 which we don’t support at present
    – However, we should not block the connection and the same is being tracked through an internal bug and planning to address in the upcoming release(s).
    – For now, as a workaround, you can exclude the particular client or server from acceleration, go to CIFS service class and exclude that client or server from acceleration.
 
 

---

Problem Cause

Protocol version between Win 10 to Win 2016 is SMB 3.1 which we don’t support at present

Description: There is no issue reported from Windows 7 machines. There are few network drives which gets mapped and the difference between the working and non-working drives is: – Non-working one is mapped via AD and it is the users home drive property – Working one are mapped via group policy. Server details are: All the drives are served from the same server 2016 datacenter edition configuration.

Supported CIFS/SMB protocol versions for quick reference in case:
https://docs.citrix.com/en-us/cloudbridge/7-4/cb-features-wrapper-con/cb-secure-traffic-accel-con/cb-cifs-smb2-mapi-wrapper-con/br-adv-cifs-accel-con.html