Here is the picture of the SID of two machines
the SMB / network‑sharing issue
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(220.8, 47%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
MarkMac51
0
Reputation points
every time i update to a newer version of Windows 25H2 i loss connection to my other computers on the network. I have to uninstall the update and run 24H2. This has been going on since October 2025. HELP
Windows for home | Windows 11 | Windows update
6 answers
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MarkMac51 0 Reputation points
2026-09-09T17:22:28.4066667+00:00 Here are the SID number of the two computers
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MarkMac51 0 Reputation points
2026-09-08T21:19:19.16+00:00 Some Windows 11 24H2/25H2 systems have duplicate machine SIDs, which also causes SMB sharing failures — even after uninstalling updates. This was confirmed by multiple users on Microsoft Q&A, where two identical machines could not share files due to identical SIDs after upgrading to 24H2
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 25%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EIB%3C/text%3E%3C/svg%3E)
Ivan B 122.3K Reputation points Independent Advisor2026-09-09T00:02:08.9733333+00:00 Hi,
What about the SID if I'm using the same Microsoft account to access these SMB folders—whether between shared computers or on a NAS?
Thanks.
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MotoX80 37,861 Reputation points2026-09-09T01:49:01.86+00:00 What about the SID if I'm using the same Microsoft account to access these SMB folders
It has nothing to do with the users' SID. It's the SID of the computer account. This would only impact you if you were using virtual machines that you cloned from a base install, or used some disk copying tool to clone an existing pc and used that to build the other pc's OS.
You can use the psgetsid tool from Microsoft's Sysinternals toolkit to display the SID.
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MotoX80 37,861 Reputation points
2026-09-09T18:03:37.1633333+00:00 That's the sid for your meltg user account.
The sid for the acctsreceivable pc is the same just without the -1002 at the end.
If you have duplicate computer sid's you can install the known issue rollback. See the download.microsoft.com link from user GTS-NJ.
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MotoX80 37,861 Reputation points
2026-09-09T19:58:49.1033333+00:00 I have this command in my notes. Run that and reboot on one pc and see if that works.
reg add HKLM\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides /v 1517186191 /r REG_DWORD /v 0 /f -
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MarkMac51 0 Reputation points
2026-09-08T21:15:08.0433333+00:00 It's not an error message it will not let me connection the network
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MarkMac51 0 Reputation points
2026-09-08T21:11:34.5166667+00:00 When i try to link to the network i put in the correct User and Password and it will not let me log in. Only after i uninstall the update it all works again