Cant connect to Network share get error 0x80004005

I can't connect to a file server on our network.

I do this by typing

\\\ into the entry box on windows file manager.

For one sever only I get an error box pop up that says

Windows can not access \\
Check the spelling of the name. Otherwise there might be a problem with your network.  To try to identify and resolve network problems, click Diagnose.

Error code:0x80004005 Unspecified error

It has a button to click to run a troubleshooter that tells me "Troubleshooting couldn't identify the problem"

I can connect to two other file servers on our network at different IP addresses using the same method.

I used to be able to connect to the .22.10 box but now I can't.

I can ping the box and get a reply.

I can use my web browser to see a web page that the box serves out

I can use a different PC on the same LAN as my normal PC and connect to the box.  It prompts me for a user name and password as one would expect and then connects.

I have tried turning off windows defender firewall - No difference.

The common problem seems to be my pc.

I am running a Toshiba Z20.  Win 10 Pro.  Registered and up to date.



Ah ha Fixed

Start>Control Panel>Programs and Features
Click "Turn Windows features on or off"  (Left hand side).
Scroll down to SMB 1.0/CIFS File Sharing Support
Tick the SMB 1.0/CIFS Client
Untick SMB 1.0/CIFS Automatic Removal and

Untick SMB 1.0/CIFS Server
Note SMB 1.0 is apparently a very insecure protocol and should not be used.
Off to ask the network guy to upgrade the server


Moderator's note: 

Please note that SMBv1 protocol is not installed by default in Windows 10 V1709 or later.  Microsoft publicly deprecated the SMBv1 protocol back in 2014.

For details, refer this support article:


312 people were helped by this reply


Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.


Question Info

Last updated September 24, 2020 Views 94,246 Applies to: