Hi everyone. I'm hitting a wall trying to deploy Sophos Intercept X to a few remaining Windows Server 2012 R2 instances. The installer fails consistently with an error that doesn't point me to a clear solution.
The error in the Sophos installation logs is:
```
Error: 0x80070643 - Fatal error during installation.
```
The `SophosInstall.log` shows a bit more context just before the failure:
```
[INFO] Running installer action: InstallSophosCore
[ERROR] Failed to execute installer action: InstallSophosCore. Exit code: -2147023293
```
Things I've already verified:
* The servers are fully updated on Windows Update.
* There's ample disk space and memory.
* No other AV software is present (we did a clean sweep).
* I've tried the standalone installer downloaded directly from the Sophos Central console, as well as the deployment package.
* Temporarily disabled Windows Defender via Group Policy before the install attempt.
Has anyone else encountered this specific scenario on Server 2012 R2? I'm wondering if there's a specific system component or prerequisite (like a certain C++ runtime or .NET version) that might be missing or need a repair, but the logs aren't helping.
My next step is to run the installer with verbose logging, but if someone has already cracked this nut, I'd appreciate the pointer. I'm also curious if this is a known issue that might require a specific installer version or command-line switch.