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Fixed in 2022.1.X

Fixed in 2020.3.X, 2021.2.X



Found in







Issue ID




"Merge failure for shared merged PRI file : error 0x80070490" thrown when installing app package targeted for ARM, x86 and x64

How to reproduce:
1. Open the attached project ""
2. Open File>Build Settings...
3. Switch Platform to Universal Windows Platform
4. Build the project
5. Open the "UWPMergeFail.sln" solution in the built project folder with Visual Studio
6. Press the right mouse button on "UWPMergeFail" in the "Solution Explorer"
7. Click Publish>Create App Packages
8. Click "Next" 2 times
9. Change "Generate app bundle:" to "Always"
10. Enable "ARM64"
11. Change "Solution Configuration" of every Architecture to "Master"
12. Click "Create"
13. Open the "Output location" of created "App Packages"
14. Press the right mouse button on "Install.ps1"
15. Run with PowerShell

Expected result: App is successfully installed
Actual result: "Merge failure for shared merged PRI file : error 0x80070490" is thrown

Reproducible with: 2020.1.0a15, 2020.3.22f1, 2021.1.28f1, 2021.2.2f1, 2022.1.0a14
Not reproducible with: 2019.4.32f1, 2020.1.0a14

Notes: Does not reproduce when Architecture is set to x86 and x64 only

  1. Resolution Note (fix version 2022.1):

    Fixed in 2022.1.0b1

    This issue can be worked around by adding this attribute to generated .vcxproj file:


    Once you upgrade to a Unity version with this fix, make sure to delete the old generated .vcxproj file as Unity will not overwrite it.

  2. Resolution Note (fix version 2021.2):

    Fixed in 2021.2.6f1

  3. Resolution Note (fix version 2020.3):

    Fixed in 2020.3.25f1

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