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Man Lam Cheng's avatar
Man Lam Cheng
Copper Contributor
Oct 02, 2025

SSMS 21/22 Error Upload BACPAC file to Azure Storage

Hello All

In my SSMS 20, I can use "Export Data-tier Application" to export an BACPAC file of Azure SQL database and upload to Azure storage

in the same machine, the SSMS 21 gives error message when doing the same export, it created the BACPAC files but failed on the last step, "Uploading BACPAC file to Microsoft Azure Storage", The error message is "Could not load file or assembly 'System.IO.Hashing, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified. (Azure.Storage.Blobs)"

I tried the fresh installation of SSMS 21 in a brand-new machine (Windows 11), same issue,

Can anyone advice?

Thanks

 

 

azure sql
azure storage
sql
sql server management studio

5 Replies

  • matteo_taveggia's avatar
    matteo_taveggia
    Icon for Microsoft rankMicrosoft
    Mar 04, 2026

    This is indeed a bug in SSMS. 

    The suggested workaround is not helpful, however it point you in the right direction, in case you are blocked and you don't want to wait for a release of SSMS with the fix I'm preparing.

    You just need to download the package from https://www.nuget.org/packages/System.IO.Hashing/6.0.0 rename it to .zip, unzip it and grab trhe System.IO.Hashing.dll you find under the lib/net461 folder. Copy it to the <SSMS_Install_Path>\Common7\IDE of your machine... Close and reopen SSMS and you should be good to go.

    For reference, the easiest way to get in touch with us (SSMS Product Team and the rest of the SSMS community is to report the issue directly via the SSMS UI:  just use the menu "Help | Send Feedback | Report a Problem" and fill out the form. Doing so would allow the SSMS community to see the issue, upvote it and be notified when a fix is available. Keep that in mind for the future!

    • Man Lam Cheng's avatar
      Man Lam Cheng
      Copper Contributor
      Mar 05, 2026

      Thank you! it works

      Same bug existed in V21, don't understand why still not fixed in V22

      I will report the bug using Help menu in the future

      Thanks

      • matteo_taveggia's avatar
        matteo_taveggia
        Icon for Microsoft rankMicrosoft
        Mar 06, 2026

        Simply because.... this is not a a forum we (SSMS Team) check for issues reported by users.

        For that reason, it was missed.

        I fixed it in our mainline branch, so you should expect the change in SSMS 22.x "soon" (either the next update or the one after that)

  • AndyPT's avatar
    AndyPT
    MCT
    Oct 03, 2025

    This seems like a bug. Here are some workarounds.

    If the issue is getting that package, you can try:

    dotnet add package System.IO.Hashing --version 6.0.0

    If you don’t need features from Azure.Storage.Blobs ≥12.17.0, you can downgrade to 12.12.0, which doesn’t depend on System.IO.Hashing:

    dotnet add package Azure.Storage.Blobs --version 12.12.0

    No guarantees about version numbers, but if you have a clean machine to try, experiment with different values.

    Hope this helps.

    • Man Lam Cheng's avatar
      Man Lam Cheng
      Copper Contributor
      Oct 06, 2025

      This command needs to be ran in a project directory, I am simply just want to backup the database. Not sure how to do this for the whole system.