Resolving Siemens HMI Pack & Go tr_ce_HmiEs.dll Transfer Failure

Restoring a Siemens HMI project from a vendor-supplied Pack & Go archive is supposed to be a one-click commissioning step. When the transfer aborts with the resource error @ResID?NoTransferDll?tr_ce_HmiEs.dll, the failure is almost always caused by missing Siemens transfer runtimes on the engineering PC, not by the network or the panel. This article walks through root cause analysis, prerequisite installation, Ethernet and MPI transfer configuration, and the offline restore path that bypasses the Pack & Go wrapper entirely.

1. Problem Statement and Symptom Profile

The typical fault presents as follows:

• Operator receives a vendor Pack & Go archive containing a StartTransfer.bat (or similar launcher) plus the compressed HMI project file (*.hmi.zip / *.timp.zip / *.srtp.zip / *.sopc.zip depending on panel family).
• PC and panel are placed on the same subnet; ping to the panel IP succeeds with reply time < 1 ms.
• The batch file is launched with Administrator privileges.
• Transfer aborts almost immediately. The console window reports:
  @ResID?NoTransferDll?tr_ce_HmiEs.dll
• The same error is reproduced over MPI when the channel is reconfigured to MPI/187.5 kbps and the PC adapter station address is matched to the panel.

The tr_ce_HmiEs.dll is the HMI Engineering System transfer component that mediates between WinCC/TIA Portal, ProSave, and the panel's runtime loader (LoaderRT.exe on the panel side). When the DLL is missing, unregistered, or blocked, neither the Pack & Go launcher nor a manual ProSave restore can communicate with the panel bootloader.

2. Root Cause Analysis

Three independent layers must be present on the engineering PC for a Pack & Go or ProSave restore to succeed:

1. Siemens ProSave (the panel service-level transfer tool). Without ProSave, the communication drivers that the Pack & Go batch file invokes are not registered as Windows services.
2. Microsoft Visual C++ 2010 Redistributable (x86). Several Siemens transfer DLLs (including older builds of tr_ce_HmiEs.dll) are built against the MSVC 2010 runtime. The x86 build is required even on x64 Windows because the Siemens COM registration is 32-bit.
3. Microsoft .NET Framework 4.5 (or higher in the 4.x line: 4.6.2 / 4.7.2 / 4.8 are all backward-compatible). The launcher shells into a .NET assembly that resolves panel family and transfer mode.

Additional secondary causes that produce the same symptom class:

• Wi-Fi adapter enabled on the engineering PC, creating a routing ambiguity for the S7 transfer channel.
• Firewall rule blocking outbound UDP/TCP on the S7 transfer ports (typically TCP 102, TCP 443, TCP 5001 and the dynamic range 49152-65535 for newer panels).
• Channel 2 of the panel configured for PROFINET/Ethernet but the Transfer setting disabled in the Control Panel → Transfer dialog.
• Panel in Transfer mode but the runtime is still holding the loader (reboot required).
• Wrong panel family detected by the launcher: the Pack & Go may have been built for Comfort Panels but applied to a Basic Panel, or vice versa.

3. Required Prerequisites (Siemens-Specified)

The official Siemens KB articles 109476153 and 109815056 list the following runtime stack. Install in the order shown.

Reference links:

• ProSave & Pack & Go runtime stack (V13/V14): Siemens KB 109476153
• ProSave & Pack & Go runtime stack (V18 example): Siemens KB 109815056

4. Ethernet Transfer Configuration (Channel 2)

4.1 Panel-side IP configuration

1. Power on the panel and enter the Control Panel (on Comfort Panels: tap the Control Panel icon on the desktop; on Basic Panels: hold the finger on the screen during boot).
2. Navigate to Control Panel → Network and Dial-up Connections → PN-X1 / PN-IE.
3. Set IP address to a static value, e.g. 192.168.56.198, with subnet mask 255.255.255.0. Default gateway can be left blank for point-to-point link.
4. Open Control Panel → Transfer and ensure:
   • Channel 2 enabled
   • Transfer mode = Ethernet
   • Enable Transfer = checked
   • Remote control = unchecked (avoid operator-level acceptance prompts)
5. Apply changes and reboot the panel if prompted.

4.2 PC-side IP configuration

1. Disable Wi-Fi to eliminate default-route ambiguity:

2. Set the wired NIC to a static IP in the same /24, e.g. 192.168.56.190 / 255.255.255.0.
3. Validate reachability:

Reply with TTL=64 and < 1 ms confirms L3 connectivity. A successful ping rules out cabling and IP issues but does not confirm the transfer channel is open.

4.3 Firewall rules

Open a Windows PowerShell elevated prompt and allow the ProSave binary paths:

New-NetFirewallRule -DisplayName "ProSave Transfer" -Direction Outbound -Program "C:\Program Files\Siemens\Automation\Portal V18\Bin\ProSave.exe" -Action Allow
New-NetFirewallRule -DisplayName "S7 Transfer TCP" -Direction Outbound -Protocol TCP -LocalPort 102,443,5001 -Action Allow
New-NetFirewallRule -DisplayName "S7 Transfer UDP" -Direction Outbound -Protocol UDP -LocalPort 5001 -Action Allow

5. MPI Transfer Configuration

When the HMI must be reached over MPI (typical on legacy S7-300 plants without PROFINET), the same Pack & Go batch can usually be redirected. Adjust the launcher command-line parameters in StartTransfer.bat:

Where:

Critical checks for MPI:

1. Panel Control Panel → Transfer → Channel 2 → MPI; address = 1 (or match the value embedded in the Pack & Go archive).
2. Siemens PC adapter (USB-to-MPI/DP, order number 6ES7972-0CB20-0XA0) drivers installed (Siemens PC Adapter USB driver package).
3. PC adapter selector switch set to MPI (not DP).
4. No conflicting STEP 7 / TIA Portal instance holding the adapter in exclusive mode. Close all other Siemens tools before launching the transfer.

6. Offline Restore (Bypass Pack & Go)

If the Pack & Go wrapper continues to fail after prerequisite installation, the more reliable path is the offline restore. The offline method is documented in Siemens KB 109740696 and uses ProSave directly.

1. Extract the *.hmi.zip (or equivalent) file from the Pack & Go archive using 7-Zip or WinRAR.
2. Launch ProSave standalone (Start → SIMATIC → ProSave).
3. In the General tab, select:
   • Device type: match the panel (e.g. TP1200 Comfort)
   • Connection: Ethernet or MPI
   • IP/Address: panel IP or MPI address
4. Switch to the Backup tab (or Restore tab, depending on ProSave version) and select Restore from file.
5. Point to the extracted *.hmi.zip (or *.srtp, *.timp) file.
6. Click Transfer. ProSave will reset the loader, push the image, and reboot the panel.

7. Verification Procedure

After a successful transfer, validate the panel state end-to-end before returning it to production.

1. Loader echo: Reboot the panel. During boot, the LoaderRT screen should display the new project name and version, not the previous one.
2. Runtime start: Confirm WinCC Runtime launches without prompting for an unmatched configuration (no dialog "Different configuration detected - update?" should appear, otherwise the project version is stale).
3. Tag test: In the Control Panel → OP/PC Diagnostics → Tags tab, force-toggle a writable tag and confirm the HMI tag reflects the change.
4. Network check: Verify the panel IP is still as configured (some restore operations reset network parameters to factory default).
5. Log inspection: Pull the panel-side Log Viewer (Start → Control Panel → OP/PC Diagnostics → Log) and confirm no transfer errors recorded for the last session.

8. Troubleshooting Matrix

9. Field-Proven Caveats

• ProSave version drift: A Pack & Go archive built against TIA V16 will not restore on a PC that only has ProSave V18 if the panel firmware is older than V16. ProSave will detect a protocol-version mismatch and abort. Always run ProSave that matches the lowest of {Pack & Go version, TIA Portal version, panel firmware version}.
• Antivirus interference: Several AV products quarantine tr_ce_HmiEs.dll as a heuristic risk (unsigned COM DLL). Add the ProSave install path to AV exclusions before launching the transfer.
• UAC and ProgramData: When the launcher is run without administrator elevation, ProSave cannot write transfer logs to %ProgramData%\Siemens\Automation\Logfiles. Always right-click → Run as administrator.
• Cross-subnet transfer: If the engineering PC and the panel are on different subnets, an unmanaged switch will not bridge them. Use a direct crossover or a managed switch with both VLANs trunked, and add a static route on the PC.
• PowerFlex / Drive-based HMIs: Some vendor Pack & Go archives are encrypted with a per-device dongle. The error then masquerades as a missing transfer DLL because LoaderRT fails at the crypto stage. Contact the panel vendor for the device-specific key.

10. Related Siemens Panels Commonly Affected

11. Quick-Reference Procedure (Copy/Paste)

Condensed checklist for a first-time restore on a freshly provisioned engineering PC:

1. Install MSVC++ 2010 x86, 2013, 2015-2022 (all three).
2. Install .NET Framework 4.8.
3. Install ProSave matching the panel's TIA Portal version.
4. Disable Wi-Fi, set wired NIC static IP.
5. Add ProSave + port firewall rules (Section 4.3).
6. Extract *.hmi.zip from the Pack & Go archive.
7. Open ProSave, configure device + channel, click Restore.
8. Reboot panel, verify project name on LoaderRT splash.

Following this sequence resolves the tr_ce_HmiEs.dll symptom in the overwhelming majority of field cases. If the error persists, escalate to the Siemens Industry Online Support portal with the ProSave log file attached.

12. Frequently Asked Questions