Resolved: Trending Issue: SPSE – “The server tag is not well formed” on certain Search administration pages after March 2025 CU

After installing the March 2025 CU (or any subsequent update) for SharePoint Server Subscription Edition, certain search administration pages include incorrect ASP.NET tags leading to the following or similar error message:

An error occurred during the processing of /_admin/search/listmanagedproperties.aspx. The server tag is not well formed.

System.Web.HttpException (0x80004005): The server tag is not well formed.
     at System.Web.UI.TemplateParser.ProcessError(String message)
     at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
     at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
     at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
     at System.Web.UI.TemplateParser.ParseFile(String physicalPath, VirtualPath virtualPath)
     at System.Web.UI.TemplateParser.ParseInternal()
     at System.Web.UI.TemplateParser.Parse()
...

June 2025 CU for SharePoint Server Subscription Edition includes a fix for this issue:

6 Comments


  1. Hi Stefan,

    Hope you’re doing great! 🙂

    After installing the June Cumulative Updates, we’ve observed the following:

    Query Logging: Running successfully post-update.

    User Profile Language Synchronization Job: Still failing. From the ULS logs, we’re seeing the following exception:

    The Execute method of job definition Microsoft.Office.Server.Administration.UserProfileApplication+LanguageSynchronizationJob threw an exception. Profile database does not contain partition [Id=xxxx] > (Correlation ID: xxxxxxxx…)

    Could you please confirm if this is still related to the patch issue? We’re currently awaiting your input to proceed.

    Thanks In Advance.

    Reply

    1. We have the same problem, but at least the other problems seem to be solved.

      Reply

      1. Yea we seem to have the same problem as well…. They will probably fix this in the July patch. I am going to guess/hope.

        Reply

    2. Hi Chandu,
      this issue is currently being investigated by the product group.
      Cheers,
      Stefan

      Reply

      1. Hi Stefan,

        Thanks for the update!

        We’ll await the outcome of the product group’s investigation.

        Best regards,
        Chandu

        Reply

  2. Hello all,

    Does the issue “User Profile Language Synchronization Job: Still failing” only occur in SharePoint SE or also in other versions (SP 2016/2019)? And what impact does this problem have on the system?

    Thanks,
    Tom

    Reply

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