Skip to the content
The Update Bureau

SharePoint Server Subscription Edition · Release Health

Known issues in SharePoint Server Subscription Edition

Problems Microsoft has confirmed for this version, from its official release health notes. 8 still open or mitigated.

SharePoint Server: SE 2019 2016
All products →

Active known issues

Open & Mitigated
8 active issues
  1. Open SharePoint Server SE Affects: Organizations and IT administrators Started with KB5002882 · Jul 14, 2026

    After you run PSConfig, run the following PowerShell commands

    After PSConfig, run the listed PowerShell commands to avoid a possible regression from a defense-in-depth feature under development.

    How to apply the workaround PowerShell

    The setting disables the defense-in-depth check that may cause a regression. Existing actor token validation checks remain in place.

    Step-by-step instructions, command & download kit
    1 step powershell.exe · Administrator Instructions (.txt)
    Show steps & kit Hide steps & kit
    Step-by-step procedure
    1. After running PSConfig, run the three PowerShell commands.
    powershell.exe · Administrator 
    > $farm = Get-SPFarm> $farm. DisableActorTokenAudienceValidation = $true #disables only the defense-in-depth validation> $farm.update ()
  2. Open SharePoint Server 2016 2019 SE Affects: Organizations and IT administrators Started with KB5002882 · Jul 14, 2026

    When a workflow status link is selected, WrkStat.aspx displays the following error message: The WorkflowInstanceID parameter is invalid

    Selecting a workflow status link can make WrkStat.aspx show “The WorkflowInstanceID parameter is invalid.”

    How to apply the workaround Workaround

    Follow Microsoft's linked guidance for workflow status links.

  3. Open SharePoint Server 2016 2019 SE Affects: Organizations and IT administrators Started with KB5002882 · Jul 14, 2026

    Customers in multi-front-end SharePoint farms with Trusted Provider or Forms authentication may face repeated authentication prompts or multiple sign-ins

    Multi-front-end farms using Trusted Provider or Forms authentication might show repeated sign-in prompts. Farms using Windows authentication should not be affected.

    How to apply the workaround Workaround

    Configure sticky sessions on the reverse proxy; this addresses most reported scenarios.

  4. Open SharePoint Server SE Affects: Organizations and IT administrators Started with KB5002843 · Mar 10, 2026

    For SharePoint Server Subscription Edition customers who are currently on the January 2026 public update, updating directly to the March 2026 public update fails when you run the SharePoint Products Configuration Wizard (PSConfig)

    For farms on the January 2026 public update, upgrading directly to the March 2026 update fails when you run the SharePoint Products Configuration Wizard (PSConfig).

    How to apply the workaround Workaround

    Include the February 2026 update in the upgrade sequence, and run PSConfig immediately after the February update and again after the March update.

    Step-by-step workaround instructions
    2 steps
    Show steps Hide steps
    Step-by-step procedure
    1. Install KB5002822 (January 2026), then KB5002833 (February 2026), then KB5002843 (March 2026).
    2. Run PSConfig immediately after installing the February update and again after the March update.
  5. Open SharePoint Server 2016 2019 SE Affects: Organizations and IT administrators Started with KB5002800 · Nov 11, 2025

    Users may see “4gab5" event tags logged in the SharePoint Unified Logging System (ULS) logs when they access sitedirectorysettings.aspx by using ‘set other host’

    Users might see “4gab5” event tags in SharePoint Unified Logging System (ULS) logs when they access sitedirectorysettings.aspx using ‘set other host’.

    How to apply the workaround SharePoint Management Shell

    Adding the additional farm host allows it to access the page, which is otherwise restricted to the current farm host.

    Step-by-step instructions, command & download kit
    3 steps SharePoint Management Shell Instructions (.txt)
    Show steps & kit Hide steps & kit
    Step-by-step procedure
    1. Confirm that the additional host is safe before adding it.
    2. In the SharePoint Management Shell, add the host to AdditionalValidSPFarmHosts and update the farm.
    3. Run iisreset.
    SharePoint Management Shell 
    > add-pssnapin *> $f = get-spfarm> $f.AddGenericAllowedListValue("AdditionalValidSPFarmHosts", "your_additional_farm_host")> $f.update()> iisreset
  6. Open SharePoint Server 2016 2019 SE Affects: Organizations and IT administrators Started with KB5002771 · Aug 12, 2025

    After you install KB5002771, you might experience an issue when you configure calendar overlay settings

    You might experience an issue when configuring calendar overlay settings after installing KB5002771.

    Workaround status No workaround yet

    Microsoft has not published a manual workaround for this issue yet. Defer KB5002771 on affected systems until a fix is released.

  7. Open SharePoint Server 2016 2019 SE Affects: Organizations and IT administrators Started with KB5002768 · Jul 21, 2025

    $farm.RemoveGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")

    Some SharePoint page resources might fail to load, and ULS logs might show an access denied message.

    How to apply the workaround SharePoint Management Shell

    Add the valid resource path to the AllowList, then restart IIS.

    Step-by-step instructions, command & download kit
    2 steps SharePoint Management Shell Instructions (.txt)
    Show steps & kit Hide steps & kit
    Step-by-step procedure
    1. Make sure the resource path is valid and as expected.
    2. Run the commands in SharePoint Management Shell.
    SharePoint Management Shell 
    > $farm = get-spfarm> $farm.AddGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")> $farm.Update()> iisreset
  8. Open SharePoint Server 2016 2019 SE Affects: Organizations and IT administrators Started with KB5002768 · Jul 21, 2025

    $farm.ContainsGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")

    Some SharePoint page resources might not load, and an Access Denied message might appear in the logs.

    How to apply the workaround SharePoint Management Shell

    Adding the resource path to the AllowList lets the affected page resource load.

    Step-by-step instructions, command & download kit
    2 steps SharePoint Management Shell Instructions (.txt)
    Show steps & kit Hide steps & kit
    Step-by-step procedure
    1. Make sure the resource path is valid and as expected.
    2. In SharePoint Management Shell, add the resource path to the AllowList, update the farm, and run iisreset.
    SharePoint Management Shell 
    > $farm = get-spfarm> $farm.AddGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")> $farm.Update()> iisreset

No known issue matches these filters.