Resolving the Siemens TIA Portal "Download Has Failed Due to Missing Panel Image" Error

The error message "Download has failed due to missing Panel Image. Please install the missing Panel Images. Refer to documentation." appears in TIA Portal V16 and V17 when a project transfer to a SIMATIC HMI operator panel cannot find the required runtime image (.fwf) file on the engineering station. The runtime image is the boot/restore image Siemens uses to flash a panel's operating system during the first download or after a firmware change. Without this image present on disk, TIA Portal blocks the download with the secondary message "Adaption of target device failed."

This reference is engineered for commissioning engineers, system integrators, and panel builders working with SIMATIC Comfort Panels, Comfort Panels Outdoor, Comfort Panels INOX, and KTP Mobile panels. It consolidates the official Siemens support article 109778386, the panel image catalog entry 109825750, and field-proven workarounds into a single, executable procedure.

1. Problem Description and Symptom Matrix

The error manifests during the following operations:

• First-time project download to a new or factory-reset panel
• Firmware adaption download (e.g., project compiled for V16.0 against a panel running V15.1)
• OS update triggered from HMI Maintenance right-click menu
• Download to a previously working panel after TIA Portal update has been applied
• Download to a panel model not in the installed hardware catalog (HSP absent)

Observed dialog text in the TIA Portal transfer screen:

The target .fwf is the panel-specific firmware image. Each panel family and each TIA Portal version has its own .fwf file. For example, a TP1200 Comfort on V16.0 expects the file:

\Siemens\Automation\Portal_V16\Data\Hmi\Transfer\16.0\images\TP1200_Comfort\TP1200_Comfort_16_0.fwf

If the images subfolder is absent or the specific family folder is missing, the transfer aborts.

2. Affected Products and TIA Portal Versions

All HMI panels whose runtime is distributed as a separate image in TIA Portal V16 and V17 are affected. The major families are:

The TIA Portal versions in which the separate-image delivery model is mandatory are V16.0 and V17.x. V15.1 and earlier installed the panel images automatically with the main installation media. The change in V16 is documented in the Siemens KB article 109778386.

3. Root Cause Analysis

Three independent root causes produce the identical symptom. Diagnose them in the order listed.

3.1 Missing Image Directory After Clean Install

When TIA Portal V16 or V17 is installed without the optional HMI Panel Images package, the directory ...\Data\Hmi\Transfer\16.0\ exists, but the images subfolder is not created. TIA Portal then attempts to read ...\Transfer\16.0\images\<panel>\<panel>_16_0.fwf and fails. The transfer aborts with the dialog text quoted in Section 1.

3.2 Missing Hardware Support Package (HSP)

Older or low-volume panel MLFBs are not part of the TIA Portal base catalog. They require an HSP installed via Options > Support Packages > Install. Without the HSP, the panel is absent from the hardware catalog and from the device proxy used at compile time. The compile step may still succeed if a similar panel is selected as substitute, but the runtime image lookup at download time resolves against the substituted device and fails if that image is absent.

3.3 Project / Panel Firmware Version Mismatch

If the project is configured for HMI version 16.0 but the engineering station only has image version 15.1 installed (or vice versa), TIA Portal initiates a firmware adaption. The firmware adaption requires the .fwf file matching the target version. If the target image is missing, the download fails with "Adaption of target device failed."

4. Required Directory Structure

The TIA Portal image store follows a strict path layout. The variables are <portal_folder> and <ver>.

<portal_folder>\Data\Hmi\Transfer\<ver>\images\<panel_family>\<panel_family>_<ver_underscore>.fwf

Concrete examples for V16.0 on a 64-bit Windows install:

C:\Program Files\Siemens\Automation\Portal_V16\Data\Hmi\Transfer\16.0\images\TP1200_Comfort\TP1200_Comfort_16_0.fwf
C:\Program Files\Siemens\Automation\Portal_V16\Data\Hmi\Transfer\16.0\images\TP1200_Comfort_Outdoor\TP1200_Comfort_Outdoor_16_0.fwf
C:\Program Files\Siemens\Automation\Portal_V16\Data\Hmi\Transfer\16.0\images\TP1200_Comfort_INOX\TP1200_Comfort_INOX_16_0.fwf
C:\Program Files\Siemens\Automation\Portal_V16\Data\Hmi\Transfer\16.0\images\KTP_7_9_Mobile\KTP_7_9_Mobile_16_0.fwf

For V15.1 the same scheme applies with the segment Transfer\15.1\. For V17.0 use Transfer\17.0\. The folder name must match the family identifier used in the panel's device description, and the .fwf filename must match the pattern <family>_<major>_<minor>.fwf.

5. Resolution Path A — Install the Official HMI Image Package

The supported and recommended fix is to download the panel image archive that matches the TIA Portal version, then extract it into the Transfer\<ver>\ folder.

5.1 Prerequisites

• Local administrator rights on the engineering station
• Approximately 2 GB free disk space per portal version (the package is ~204 MB compressed and ~600 MB extracted)
• Write access to C:\Program Files\Siemens\Automation\Portal_Vxx\Data\Hmi\Transfer
• Siemens Industry Online Support account (registration free, see support.industry.siemens.com)

5.2 Step-by-Step Procedure

1. Close all running TIA Portal instances.
2. Navigate to the Siemens KB article 109825750 — Image downloads for HMI operator panels and select the archive matching your TIA Portal version and update level. For V16.0 the canonical packages are:
   • 109746530_ComfortPanels_V16.0_Upd2.zip — V16.0 Update 2 (203.5 MB)
   • 109746530_ComfortPanels_V16.0_Upd1.zip — V16.0 Update 1 (203.5 MB)
   • ComfortPanels_V16.0.zip — V16.0 base (203.5 MB)
3. Save the archive to a local folder with at least 2 GB free (e.g., D:\Siemens_HMI_Images\).
4. Right-click the archive and extract with the Windows native ZIP handler or 7-Zip. Do not run an installer; the package is a payload that overwrites files in place.
5. Open the destination folder C:\Program Files\Siemens\Automation\Portal_V16\Data\Hmi\Transfer in a second Explorer window. Confirm the subfolder 16.0\ exists.
6. Copy the extracted content so that the images subfolder is created at Transfer\16.0\images\. Use Copy and Replace to overwrite older files.
7. Verify the layout. The path Transfer\16.0\images\TP1200_Comfort\TP1200_Comfort_16_0.fwf must now resolve.
8. Reopen the project in TIA Portal and retry the download.

6. Resolution Path B — Manual Image Copy Workaround

If the official archive is unavailable, the same result can be achieved by copying the images directory from a working engineering station of the same TIA Portal version. Use this as a fallback when the network policy blocks the Siemens download server.

1. Identify a peer station running TIA Portal V16.0 with all panel images installed (any Comfort, Outdoor, INOX, or KTP Mobile panel that downloads successfully).
2. Copy the entire images directory tree from the peer: ...\Portal_V16\Data\Hmi\Transfer\16.0\images\*.
3. Paste it into the same path on the target station. If the images directory does not exist, create it before pasting.
4. Preserve NTFS permissions. The default ACL grants Users read access; the installer runs as administrator, so do not loosen the ACL on the Program Files tree.
5. Reboot the engineering station so that the TIA Portal service cache re-indexes the image directory.

7. Resolution Path C — HMI Maintenance OS Update

The HMI Maintenance wizard inside TIA Portal is the canonical path for OS restore and panel image cross-check. Using it surfaces the exact missing .fwf file path in the error log, which is the fastest diagnostic when you are unsure which image is missing.

1. Open the project in TIA Portal and ensure the HMI device is in the project tree.
2. Right-click the HMI device node and select HMI Maintenance > Update OS.
3. Select the panel's PROFINET or PROFIBUS interface, or USB, depending on your physical connection.
4. Click Update. TIA Portal scans for the required image; if the .fwf is absent, the wizard reports the full expected path in the log pane.
5. Note the path printed in the log. Compare it with the directory layout from Section 4. The missing component is usually either the images folder itself, a family subfolder, or a specific .fwf file.
6. Install the missing component using Path A or Path B, then rerun Update OS.

This procedure is non-destructive if the panel already has a working OS; it is a flash-and-reboot operation. Allow 5–12 minutes for a TP1200 class panel and do not power-cycle the panel during the operation.

8. Resolution Path D — Project Version Downgrade Workaround

If the panel is on a lower firmware version than the project target, and only the higher-version image is available, you can temporarily downgrade the HMI device version in the project to match an image already installed locally. This is a commissioning-time workaround; the project should be re-aligned with the deployed panel firmware before final handover.

1. Open the HMI device properties in the TIA Portal project tree.
2. Navigate to General > HMI device version.
3. Change the version from the current project value (e.g., 16.0.0.0) to the version present on the panel (e.g., 15.0.1.0).
4. Recompile the project (Project tree > right-click > Compile > Software [Rebuild All]).
5. Retry the download. TIA Portal will perform a downgrade adaption using the V15.0.1 image already on disk.
6. Once download succeeds, return the device version to the target value, recompile, and schedule a follow-up upgrade download when the matching V16.0 image is installed.

9. Comfort Panel, Outdoor, and INOX Image Downloads (V16.0 Catalog)

For V16.0 the standard Comfort Panels, Comfort Panels Outdoor, and Comfort Panels INOX share a single image package. The contents are:

Always prefer the latest Update level that matches the Service Pack installed on TIA Portal. Mismatched update levels cause the firmware adaption to fail mid-flash and may leave the panel in recovery mode.

10. KTP Mobile Panel Image Downloads

The KTP Mobile family uses a separate image folder KTP_7_9_Mobile with files such as:

Transfer\16.0\images\KTP_7_9_Mobile\KTP_7_9_Mobile_16_0.fwf

Older TIA Portal versions combined Mobile and standard Comfort images; in V16 the Mobile images are isolated. If a project contains both a TP1200 Comfort and a KTP700 Mobile, both TP1200_Comfort and KTP_7_9_Mobile subfolders must be populated. The official download bundle includes both families.

11. HSP Installation for Out-of-Catalog Panel MLFBs

Some panel MLFBs (regional variants, new product introductions after the TIA Portal release date, or successor models) are not in the base catalog. They are delivered as Hardware Support Packages.

1. Open TIA Portal.
2. Choose Options > Support Packages.
3. In the Installed Support Packages tab, search for the panel family (e.g., "TP1200 Comfort").
4. If absent, switch to the Available Support Packages tab, connect to the Siemens update server, and import the matching HSP.
5. Alternatively, download the HSP .isp file from the Siemens KB and install via Add from file system.
6. Restart TIA Portal. The new device appears in the hardware catalog under HMI > Comfort Panels.

The HSP is independent of the runtime image. Even after HSP installation, the panel image must still be present in the images directory; the HSP only adds the device proxy to the catalog.

12. Verification Procedure

After applying any of the resolution paths, perform the following verification sequence before declaring the fault closed.

1. File system check. Confirm the .fwf file exists for every panel family referenced in the project. For a TP1200 Comfort, verify TP1200_Comfort_16_0.fwf (or the relevant version) is present and is at least 200 MB.
2. Compile check. In the project tree, right-click the HMI device and select Compile > Software (Rebuild All). The compile must complete without the warning No image available for device.
3. Connection check. Confirm the engineering station can ping or PROFINET-name-resolve the target panel.
4. Download check. Initiate a download to the panel. The progress bar must reach 100% and the TIA Portal status bar must display Download completed successfully.
5. Panel boot check. Power-cycle the panel and confirm it boots to the configured start screen within 60 seconds.
6. Log review. Inspect the TIA Portal transfer log at Project > Logs for the message Firmware adaption performed. If present, the .fwf was used as expected.

13. Troubleshooting Matrix

14. Field-Proven Caveats and Edge Cases

• Compressed archives and antivirus. Some endpoint protection suites quarantine the .fwf files mid-extraction, leaving zero-byte placeholders. Disable real-time scanning on the Transfer directory before extraction, or whitelist the .fwf extension.
• User Account Control. Extracting directly into Program Files triggers UAC virtualisation if the extractor is not elevated. Always run the extraction tool as administrator.
• Multiple TIA Portal versions on the same host. A V15.1, V16, and V17 install can co-exist. Each has its own Portal_V## folder; do not cross-copy images between them. The .fwf format is version-bound.
• Project portability. A project archived on an engineering station with V16 images will not download on a peer with only V15.1 images. Configure the project's HMI device version to match the lowest common image version present on the commissioning team.
• Firmware downgrade boundary. Comfort Panels cannot downgrade below factory firmware. If the panel is at V16.0 and only V15.1 images are available, a downgrade may be rejected with Firmware version not supported. The only fix is to obtain a V16.0 image from Siemens.
• Panel boot delay after adaption. After a firmware adaption download, the panel may take up to 3 minutes to complete the first boot. Do not interrupt power.
• WinCC flexible / ProSave migration. Projects migrated from WinCC flexible must be re-saved in TIA Portal before the image lookup uses the new directory layout. The migration wizard does not copy .fwf files.

15. Summary of Resolution Selection

Use the following decision tree when the error appears:

Is TIA Portal V16 or V17?
├── Yes → Does the images folder exist under Transfer\<ver>\images?
│         ├── No  → Apply Path A (install official archive)
│         └── Yes → Does the family subfolder exist?
│                   ├── No  → Copy from peer or re-extract
│                   └── Yes → Does the .fwf file exist and is its size > 100 MB?
│                             ├── No  → Re-download the archive; check AV
│                             └── Yes → Apply Path C (HMI Maintenance > Update OS)
│                                     └── Still fails → Apply Path D (downgrade project version)
└── No  (V15.1 or earlier) → Images should be auto-installed; reinstall TIA Portal media

16. Reference Documentation

The procedures and directory layouts in this article are sourced exclusively from Siemens Industry Online Support:

• Siemens KB 109778386 — Error when loading the project into an HMI Panel with Firmware Adaption
• Siemens KB 109825750 — Image downloads for HMI operator panels
• Siemens Industry Online Support portal (entry point for HSPs, image packages, and firmware updates)