How to manually uninstall Dynatrace OneAgent on Windows
While trying to uninstall an old version of OneAgent on Windows you are getting an MSI error 1603.
This generally happens if the old msi package pertaining to the same old version has been removed or deleted from the machine. Windows installer requires the same MSI package to uninstall a product.
https://learn.microsoft.com/en-us/troubleshoot/windows-server/application-management/msi-installatio...
To solve this issue, either you have to find the exact installer from a different machine or request Dynatrace to provide it to you. Make sure that the version you are requesting is supported at that moment, otherwise, it will require manual uninstallation from the machine.
If you do not have access to the MSI package yet, please do a manual uninstall of OneAgent from the Windows host.
Follow the steps below with admin rights or take help from a local Windows administrator to execute the steps:
Manual uninstall of oneagent in case of msi 1603 error:
- Uninstall the agent (if uninstall does not work see the manual cleanup procedure below)
- Reboot (to remove all the injected code)
- Delete
INSTALL_DIR and RUNTIME_DIR directories [1].
Default INSTALL_DIR = C:\Program Files\dynatrace\oneagent
Default RUNTIME_DIR = %PROGRAMDATA%\dynatrace\oneagent
- Delete the following subfolders in
%APPDATA%:
OneAgentruxit (if present)
- Delete
%SYSTEMDRIVE%\AI_RecycleBin (if present)
- Delete the following file:
%SystemRoot%\System32\drivers\oneagentmon.sys
- Using
pnputil.exe, delete driver from DriverStore
- Run
pnputil.exe /enum-drivers
- Locate driver with provider name
Dynatrace LLC, note the "published name" (e.g. oem2.inf)
- Delete driver with
pnputil.exe /delete-driver <published name>
- Delete the oneagentmon service:
- Run
sc stop oneagentmon
- Run
sc delete oneagentmon
- If deleting the service with
sc.exe fails for whatever reason, you can manually delete the service's registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\oneagentmon
In case you delete the key manually, be sure to reboot the machine after the last step. Otherwise the service control manager will think the service still exists and re-creating it will fail if the machine is not rebooted in between.
- Remove WinPcap by running
C:\Program Files\WinPcap\uninstall.exe (note that the OneAgent uninstaller removes WinPcap but keeps uninstall.exe, this step will remove that as well)
- Reboot (optional) - needed for Windows to delete registry keys for paths that were removed.
Hopefully, by following the manual uninstallation steps, you will be able to uninstall the old OneAgent version. However, if the steps provided did not work, please get in touch with product/tech support at Dynatrace.
