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4 replies

RachelW33
Alumni - Expert
Alumni - Expert
March 31, 2025

Doing a manual update for TurboTax Desktop should resolve Microsoft Installer Error:1603.

 

Please follow the directions in this TurboTax Help Article: Manually Update TurboTax for Windows Software


 

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Level 4
March 31, 2025

I am using TT desktop and getting the same error 1603.  Manual update didn't work.

 

Thank you.

CatinaT1
Alumni - Intuit
April 1, 2025

You need to clear your Cache and Cookies before doing the manual update.

 

What is a manual update?

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Level 4
April 6, 2025

Thanks for your reply.

 

Actually, the error message I am getting is: Microsoft Installer error 2725.

 

Thanks again for your help!