Windows 11 computer cannot access other computers in the network, giving a 0x80004005

[RobertX]

The "Windows cannot access \\NETWORKSHARE" problem has returned. I don't know how, but somehow the problem has returned in the last few days.Basically, all other computers can access this computer, but not the other around. The other computers' OSes were: Linux Mint, Windows 10 Pro, and Windows 7 Ultimate.

Here's what I tried:

1. Entering any and all variations of NETWORK SHARE names possible, including     
   • share names
     
   • IP addresses
     
   • including file folders with share names
     
   • including file folders with IP addresses
     
2. Enabling and disabling SMB/CIFS 1.0 protocols.
   
3. Pinging the other computers; that worked, so I know the connections are right.
   
4. While isolating the Windows 11 problem, the other computers can communicate with each other. I've added this point to ensure that all other computers are still working
   
5. Checking for allowing the insecure logins option; I initially allowed this because that's how my W11 computer can communicate with the others. That options has not changed. 3
   
6. Installing new drivers to ensure that things are going right. That didn't help and was a waste of time. 
   
7. Adding the SMB protocols (SMB/CIF 1.0, SMB Direct) 
   
8. Adding Network Discovery. 
   
9. Manually specifying IP address and DNS address. 
   
10. Enabling File and Print Sharing.
    
11. Setting the Network Profile between Private and Public.
    
12. Not setting Password Protection.  
    
13. What have I missed?
    

Since the last few days, I recall installing new Windows updates and updating my Gigabyte DS3H motherboard firmware. Also, the other computers can communicate with this computer, just not the other way around.

I just tried to wipe everything and start over. That didn't work.

OK, that's all I can reveal for the moment. Back to bending more rules in the book.

Thank you in advance.



UPDATE: I tested a previous version of my Windows 11 OS package, this one doesn't the latest update, in that works. I think we can say that it's the latest update that broke the functionality.

I guess I'll have to wait for another update.

EDIT: Question: Is there a way to move back a Cumulative Update and not use the one offered this month?

[ExtremelyAnoid]

can you see anything with explorer? on the network

[RobertX]

No, I can't, and that is the problem.

EDIT: I've found a way out, or rather, someone helped. From Elevenforums (https://www.elevenforum.com/t/windows-11...ost-507307)

OK with 24H2 Pro 26100.1742 I had the same problem.
My Windows 10 Pro could access Windows 11 24H2 through my network, however Windows 11 24H2 could not access my Windows 10 Pro or any earlier versions of Windows 11 Pro Computers this only happened since I went to 24H2.
To fix this issue I did both of these changes in Local Group Policy Editor. And Now all is happy including me. I hope this helps.

Computer Configuration, Windows Settings, Local Policies, Security Options
Double click on Microsoft Network Client: Digitally sign communications (always)
Double click on Microsoft Network Client: Digitally sign communications (if server agrees)
Set both of these to "Disabled"
Click on OK.

Computer Configuration, Administrative Templates, Network, Lanman Workstation
Double click on "Enable Insecure Guest Logons"
Set this to "Enabled"
Click on OK.