White border around windows and white background

Discussion in 'Windows Virtual Machine' started by JoseL43, Aug 1, 2025.

  1. JoseL43

    JoseL43 Bit poster

    Messages:
    1
    Hi, from some weeks I'm having a problema with Windows in coherence mode.
    A white border around the windows appears and in some windows all the background changes to white.
    I'm attached some screenshots.
    upload_2025-8-1_11-36-38.png

    upload_2025-8-1_11-35-42.png

    My system is a Mac Mini M4 Pro with 64GB RAM Sequoia 15.6 and the installed version of Windows is Windows 11 24H2 26100.4770
    Regards
     
  2. DavidB189

    DavidB189 Bit poster

    Messages:
    2
    I am having this same issue.
     
  3. Adarsh Jeetun

    Adarsh Jeetun Staff Member

    Messages:
    100
    Hello @JoseL43 , @DavidB189 ,
    Please note that this is being investigated by our development team. Once there is an update we will let you know.
    Thank you!
     
  4. thomasf24

    thomasf24 Bit poster

    Messages:
    4
    Same issue since a few weeks on my MacBookPro M4 w 48GB. It seems shadows and blurring background isn't running correctly (i guess it is since Parallels Desktop v26)
     
  5. AtAM1

    AtAM1 Bit poster

    Messages:
    10
    Same issue on MacPro Intel running latest Windows 11 24H2 26100.6725
    Version 20.4.1 (55996)

    In addition, windows under coherence keep going out of focus (being pushed behind other apps / windows on macOS) when selected ie. start menu, file manager etc.
     
  6. Dmitry Mercurio

    Dmitry Mercurio Bit poster

    Messages:
    3
    @Adarsh Jeetun
    Hi there! It's been over two months already -- is there any update or fix for this issue? It's been quite a long time.
     
    AtAM1 likes this.
  7. FranciscoD6

    FranciscoD6 Junior Member

    Messages:
    12
    Hi, this is happening since summer in 24H2. an update fixed the issue on my side, 2025-08 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for arm64 (KB5064402). but it came back with 25H2 yesterday's latest Prod patches, so the issue is back

    2025-10 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5066835) (26200.6899)
    2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for arm64 (KB5066128)

    Everything was fine until this moment
    2025-09 Cumulative Update Preview for Windows 11, version 25H2 for arm64-based Systems (KB5065789) (26200.6725)

    so uninstalling both latest October patches fix the issue
     
    AtAM1 likes this.

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