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Known update issues

SQL Server 2022 CU27: some Master Data Services features do not work as expected

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Summary

After installing SQL Server 2022 Cumulative Update 27 (KB5104824), some Master Data Services (MDS) functions might not load or work as expected. Microsoft confirms the issue and is investigating a fix. No workaround is documented yet.

Symptoms

The following MDS functions might not load or work as expected:

  • Creating an entity
  • Creating an attribute
  • Loading hierarchies in Explorer

Affected

  • SQL Server 2022 with Cumulative Update 27 (KB5104824) installed
  • Installations that use Master Data Services (MDS)

Workaround

No workaround known.

Fix

Not fixed yet. Microsoft is investigating a fix.

Recommendation

If you use Master Data Services, do not deploy KB5104824 to production MDS servers until Microsoft provides a fix. Test the update first in a test environment, especially entity and attribute creation and hierarchies in Explorer. Check the Microsoft page regularly for updates.

Check script: am I affected? (PowerShell, read-only)

SQL Server 2022 CU27: some Master Data Services features do not work as expected

What it checks
The check reports whether SQL Server 2022 CU27 (KB5104824) is installed on this Windows device, which is the update named in the known issue. It changes nothing, writes no file and needs no internet.
What to do if affected
If the device runs SQL Server 2022 CU27 and uses Master Data Services, expect that creating entities or attributes and loading hierarchies in Explorer may not work. Microsoft is investigating a fix and no workaround is known, so wait for a later update that resolves the issue.

Result and exit code: AFFECTED = 5, NOT AFFECTED = 0, FIXED – solution installed = 0, UNCLEAR = 6, error = 1 (as an Intune detection script: 1 = affected, otherwise 0).

What exactly happens?

  • Only reads – changes nothing, writes no file, needs no internet and asks no questions.
  • Checks: update KB5104824 installed
  • Reports the result with one line per condition and the next step.

What is checked

  • Affected if: update KB5104824 installed

How to use the script – step by step

  1. Download: on the entry page, read the terms and conditions (section "Free scripts") and the disclaimer, tick "I accept" and click "Download script". The file is saved in your "Downloads" folder.
  2. Open PowerShell: press the Start key, type "PowerShell", press Enter. No administrator rights are needed – only if the result reports conditions as "not checkable", open PowerShell as administrator (right-click "Windows PowerShell" › "Run as administrator").
  3. Change to the Downloads folder (type or paste the command, then press Enter):
    cd "$env:USERPROFILE\Downloads"
  4. Compare the checksum: the command shows a long string. It must be exactly the same as "SHA-256" on the entry page (94748EB168FD64AC90DD75F850C8C6B22F0A9ED4A8B44C1A71CF6E689E5A4DA4). If it differs, delete the file and do not run it.
    (Get-FileHash .\ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1 -Algorithm SHA256).Hash
  5. Unblock the file (Windows marks downloaded files). Alternatively in Explorer: right-click the file › Properties › tick "Unblock" at the bottom › OK.
    Unblock-File .\ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1
  6. Allow scripts for this PowerShell window only. This only applies until you close the window – the computer's setting stays unchanged. If PowerShell asks, confirm with "Y".
    Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
  7. Run the script. It only checks: it changes nothing, writes no file and needs no internet.
    .\ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1
  8. Read the result (at the bottom): "AFFECTED" – follow the steps under "what to do" (e.g. install the update or use the entry's fix script). "NOT AFFECTED" – nothing to do. "FIXED – solution installed" – nothing to do; you can undo a workaround you applied earlier. "UNCLEAR" – not everything could be checked: compare the details in the entry manually.
  9. Download without a browser (RMM, software distribution): the address needs "&agb=1". This means the person deploying the script accepts the terms and conditions (section "Free scripts") and the disclaimer on behalf of their organisation.
    Invoke-WebRequest "https://www.it-sb.ch/ki-api/?a=dl&f=ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1&agb=1" -OutFile ".\ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1"
  10. For many devices (RMM, scheduled task): command below, exit codes 0 = not affected or fixed, 5 = affected, 6 = unclear, 1 = error. Upload it as the detection script of an Intune remediation ("Run script in 64-bit PowerShell" = Yes): there it automatically reports 1 = affected, otherwise 0 (manually with -Intune).
    powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1
    powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1 -Intune
File
ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1 · no administrator rights needed
Version
1 · Date 1 Nov 2026 · 25 KB
SHA-256
94748EB168FD64AC90DD75F850C8C6B22F0A9ED4A8B44C1A71CF6E689E5A4DA4
Downloads
0
Source of the details
support.microsoft.com

Use at your own risk – no warranty, no liability if anything does not work or is wrong. Test before use and make a backup. Our terms and conditions (free scripts) apply. Generated automatically from the vendor’s statement and checked (rules, second AI review).

Download without a browser (RMM, software distribution): address with "&agb=1" – this means the person deploying the script accepts the terms on behalf of their organisation: https://www.it-sb.ch/ki-api/?a=dl&f=ITSB-Check-sql-server-2022-cu27-some-master-data-services-features-do-n-v1.ps1&agb=1

Sources

Compiled from the sources listed and translated with AI (Claude); status and dates come from the vendor. The vendor’s statements are authoritative. Updated 1 Nov 2026, 22:05.

Where the information comes from

We continuously read the vendors’ official sources, community reports and trade media and summarise them in our own words, with a link to the source:

  • Microsoft: Windows release health (Windows 10/11, Server 2016 to 2025), Windows message center, known issues of Microsoft 365 Apps (Outlook, Excel, Word, PowerPoint), Edge, Intune, Autopilot, Windows 365 and Entra Connect, Microsoft KB articles with timelines, Exchange and Windows IT Pro blogs, optionally Microsoft 365 service health and message center
  • other vendors: Veeam KB, Citrix (known issues), Ubuntu and Debian (regressions), Broadcom (VMware), Fortinet, Cisco, Mozilla, Let’s Encrypt
  • community (title, short excerpt and link only, without the names of the authors): Microsoft Q&A, Microsoft Tech Community (discussions), Veeam R&D Forums, Eleven Forum
  • targeted web research with AI (Claude), e.g. on the updates of the month – this also finds discussions on Reddit and in forums; such entries are labelled as community reports until the vendor confirms them
  • early warning from trade media (title and link only): Born’s Tech and Windows World, BleepingComputer, AskWoody, Windows Latest, Windows Central, gHacks, The Windows Club, Deskmodder, Dr. Windows, WindowsArea, Frankys Web, heise online

Summary and translation with AI (Claude by Anthropic) – without any data of visitors.

Affected? We can help.

We check whether your systems are affected, apply workarounds properly and plan for dated changes in good time.