# FMOD not building Master.strings.bank file, causing unity to not be able to find banks
**URL:** https://qa.fmod.com/t/fmod-not-building-master-strings-bank-file-causing-unity-to-not-be-able-to-find-banks/24336
**Category:** Unity
**Tags:** unity
**Created:** [June 16, 2026, 7:07pm UTC](https://qa.fmod.com/t/fmod-not-building-master-strings-bank-file-causing-unity-to-not-be-able-to-find-banks/24336 "2026-06-16T19:07:48Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Persephone](https://qa.fmod.com/u/Persephone)
#### Post date: [June 16, 2026, 7:07pm UTC](https://qa.fmod.com/t/fmod-not-building-master-strings-bank-file-causing-unity-to-not-be-able-to-find-banks/24336/1 "2026-06-16T19:07:48Z")
I set up FMOD integration using unity 6.4.7f1, FMOD 2.03.11, and im using the FMOD package for 2.03. it was working for a while, i have one event that works just fine, but now when i try to build it says the bank was already built and doesnt show any of the new events i added other than the one. i tried deleting the build folder and rebuilding, but now its not building the Master.strings.bank, and now when i try to refresh banks, unity says no bank files exist.
ive tried verifying the FMOD project, and it finds no errors, ive tried restarting unity and removing and redownloading the FMOD package.
the path appears to be set correctly, it is linked to the FMOD project, and the folder that the error references does contain the Master.bank file.
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### Author:  [@Persephone](https://qa.fmod.com/u/Persephone)
#### Post date: [June 18, 2026, 6:10pm UTC](https://qa.fmod.com/t/fmod-not-building-master-strings-bank-file-causing-unity-to-not-be-able-to-find-banks/24336/2 "2026-06-18T18:10:41Z")
for anyone experiencing the same issue, i saw that FMOD only generates the Strings file for the master bank, and Unity needs the strings file. i think my fmod project wasnt recognizing my bank as the master bank, and so not building the strings file. i made a new fmod project and its working fine now.
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### Author:  [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)
#### Post date: [June 22, 2026, 4:48am UTC](https://qa.fmod.com/t/fmod-not-building-master-strings-bank-file-causing-unity-to-not-be-able-to-find-banks/24336/3 "2026-06-22T04:48:02Z")
The FMOD for Unity Integration requires both Master and Master.strings bank files so that it can get access to all the information from the FMOD Studio project.
In you FMOD Studio project make sure to have one of the banks marked as `Master`
