Allplan Forum: [bugreport] Windows 11 Smart App Control prevents ALLPLAN 2026-0-3 update

smaassscal…

12.02.2026 - 10:20 *

Updating from ALLPLAN 2026-0-2 to 2026-0-3 failed multiple times at 63%. A Windows 11 Smart App Contol notification occures and or says that some parts of this app is blocked ( pointing to https://support.microsoft.com/de-de/windows/smart-app-control-hat-einen-teil-dieser-app-blockiert-0729fff1-48bf-4b25-aa97-632fe55ccca2).

The installer screen shows Allplan-2026-pea-NuSm

Attached you'll find some screen shots and the installer error log.

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Error Report of Allplan_Installer.zip

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jvelletti

12.02.2026 - 11:18

Danke für die Info
PS: das nächste mal darfst du auch Links post :-)

Allplan Webentwicklung

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smaassscal…

12.02.2026 - 11:26

Quote by jvelletti

Danke für die Info
PS: das nächste mal darfst du auch Links post :-)

Danke schön!

smaassscal…

12.02.2026 - 12:08

I've managed to solve the problem, but I don't know exactly what the solution was. Here is what I did:

I updated the Security Intelligence-Update for Microsoft Defender Antivirus from version 1.445.8.0 to version version 1.445.11.0
I did a repair installation for ALLPLAN 2026-0-2.

After this I could upgrade to ALLPLAN-2026-0-3.

smaassscal…

19.02.2026 - 10:50

Problem occured again during the deinstallation of ALLPLAN 2026-0-3 (see attached screenshots and error report).

After another Security Intelligence-Update for Microsoft Defender Antivirus (KB2267602) to version 1.445.137.0 the de-installation worked.

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Error Report of Allplan_Installer…

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