SMB sharing not working after windows 10 update Build 2004 update

Anonymous
2020-06-20T02:30:38+00:00

Any help is  appreciated

Windows for home | Windows 10 | Internet and connectivity

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Monkey57 3,535 Reputation points
2020-11-03T02:21:51+00:00

Win10 20H2 fixes the issue.

Previously when 2004 broke smb1, I rolled back.

There was no registry change or any other modification made to the system.  After Win10 20H2 upgrade was installed via Windows Updates;  SMB1 worked as it did before the upgrade.

Thank you Microsoft.

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  1. Anonymous
    2020-08-31T21:01:55+00:00

    This worked for me, and I'm quite the newbie to network admin.  For other newbies, to add this key, go to start, type in regedit, open the app, navigate to the key HKEY_CURRENT_USER\Network\

    then look for the letter of the mapped drive (I only had the one anyway)

    then click on edit, new, DWORD Value, change the name of the new value to ProviderFlags, set the value as decimal 1.  Then close and re-boot.

    I'd probably set a restore point before you do this, or export a backup of the registry, in case you mess it up.  Unlikely though.

    My problem had been that I have an old scanner still running on an XP machine, that cannot be upgraded, and the rest of my network is Windows 10.  After the update the W10 machines could no longer access the mapped drive on the XP machine, even with SMB1 options still set as they were before the upgrade.  I rolled back to keep the business running until I could figure this out. 

    It's getting harder to keep that old scanner going but a new one is very expensive (medical x-rays from phosphor plates) and I'm retiring in the next 5 years.  Of course the manufacturer long ago abandoned the scanner, and all updates.  The new ones do the exact same as the old ones, it's a grayscale image after all, nothing high tech there.  I just wanted to explain why so many businesses still need things like a working XP 32bit machine, SMB1 access and so on. 

    Thanks for forums like this, since I can't call tech support and am on my own.

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  2. Anonymous
    2020-08-22T03:19:14+00:00

    My PC just updated to W10B2004 and killed SMB1.

    In my case, all I had to do is turn off the exisiting SMB1 and SMB Direct settings under Windows Features, reboot, turn them on again, reboot.

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  3. Anonymous
    2020-07-03T11:31:34+00:00

    Thank you very much, gentlemen from Microsoft, for solving the problem they created for us so "quickly"!!!

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  4. Anonymous
    2020-07-06T20:24:07+00:00

    Another workaround is to try restarting the Workstation Service after user logon. This seems to reconnect the failing SMB1 mapped drive.  

    We've also moved away from net use script mapping and using a gpo preference.

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