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Editorial Team
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Asked: 2026-06-13T01:58:24+00:00

I have read the list of breaking changes listed at Application Compatibility in the

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I have read the list of breaking changes listed at Application Compatibility in the .NET Framework 4.5. It seems like the biggest issue with migrating a .NET 4.0 application to .NET 4.5 would be that a .NET 4.5 application can’t run on XP. If I can be assured that this will never be necessary, what are the biggest concerns in migrating a distributed application from .NET 4.0 to .NET 4.5 ? Are any of the listed issues more significant than they appear to be?

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  1. Editorial Team

    It’s usually risky to migrate a an app even when there are no known compatibility issues. In this case when there are known breaking changes I would avoid the migration.

    A simple test won’t reveal specific cases where the application could behave differently.

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