As we know, Veeam Backup and Replication 9.5 Update 4a supports lots of new features, I showed you how to step by step to install it at my previously Blog.

Today, I tried to upgrade Veeam Backup and Replication from 9.5 update 3a to 4a, and it showed Unable to detect database action error message, it has never happened this error before, I got a solution to solve this issue after contact with Veeam support engineer, let’s follow steps to solve this issue.

  1. Login to the Veeam server.
  2. Click Start, click Run, type Regedit.exe, and then click OK.

  3. Locate and then click the following registry subkey:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders

  4. In the right pane, verify that the values are the same as the values in the following table.

    For Windows server 2016 and 2019

  5. If any Name, Type, or Value does not match the table, you need to Delete them or Modify them.

  6. Locate and then click the following registry subkey:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders

  7. In the right pane, verify that the values are the same as the values in the following table.

    For Windows server 2016 and 2019

  8. If any Name, Type, or Value does not match the table, you need to Delete them or Modify them.

  9. Exit Registry Editor, and then restart the Veeam Server.
  10. I ran Setup.exe to install Veeam Backup and Replication 9.5 update 4a again, the error message was gone and install successful.

Hope you enjoy this post.

Cary Sun

Twitter: @SifuSun

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