Read / write files in node using fs in UNC path

Question

Has problems reading/writing in a UNC path with nodeJs on my local machine. At some point, fs was read / written from my machine to the UNC path just fine, but now it seems that it cannot read / write to it.

UNC path: \\[machine name]\folder1\folder2\file.csv

I upgraded to node 12 back and thought there might be a network path error, but I don’t see anyone affecting it online. Then I used nvmw to download the old version of node and still nothing.

I wondered if this was because I was not joined to the same domain, however this was not a problem before. I can ping a box, access in Windows Explorer, remote login.

I tried running the application as my user as admin, added Windows credentials for the network administrator in Credential Manager.

I tried to change the flags used for r , r+ , a , a+ 0666 permissions ...

Missed Trails

• \\[machine name]\
• \\?\[machine name]\
• \\?\UNC\[machine name]\

Write error

 { [Error: UNKNOWN, mkdir '\\[machine name]\Storage\CSV\Example.csv'] errno: -4094, code: 'UNKNOWN', path: '\\[machine name]\Storage\CSV\Example.csv' } 

Read error

 { [Error: UNKNOWN, open '\\[machine name]\Storage\CSV\Example.csv'] errno: -4094, code: 'UNKNOWN', path: '\\[machine name]\Storage\CSV\Example.csv' } 

I went through a lot of the actual fs code and it looks like I eventually generated the corresponding path, but it doesn't seem to be very well visible with windows to access the UNC path.

I hope that someone can give me some guidance on things to check or possible reasons for this.