topic Re: how do i fix microsoft error 1603 in Get your taxes done using TurboTax

how do i fix microsoft error 1603

marciew1 — Tue, 03 Feb 2026 14:32:19 GMT

RachelW33 — Mon, 31 Mar 2025 01:27:23 GMT

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

Inugasuki — Mon, 31 Mar 2025 12:04:11 GMT

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

Thank you.

CatinaT1 — Tue, 01 Apr 2025 17:13:13 GMT

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

Inugasuki — Sun, 06 Apr 2025 02:33:47 GMT

Thanks for your reply.

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

Thanks again for your help!