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MNBLB
New Member

Everytime Turbotax tries to download updates,, I get an error: "System.runtime.serialization.serializationexception. Downloading state is ann endless mloop.

Everytime Turbotax tries to download updates,, I get an error: "System.runtime.serialization.serializationexception. Downloading state is ann endless mloop.

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‎March 19, 2026 3:25 PM
last updated ‎March 19, 2026 3:25 PM
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CatinaT1
Expert Alumni
Expert Alumni

Everytime Turbotax tries to download updates,, I get an error: "System.runtime.serialization.serializationexception. Downloading state is ann endless mloop.

Try this:  State install/e-file update loop: State not installed after installation or TurboTax needs to update...

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‎March 20, 2026 9:17 AM
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