Identify the Installation Block
After uninstalling WinCC 2005, the WinCC 2007 installer can remain blocked by the message “Please reboot before installing any more programs.” A normal PC reboot did not clear the condition in the reported case. The original attachment is unavailable, so confirm that this exact message—not another installer error—is displayed before applying this resolution.
Apply the Confirmed Resolution
Use the corrective procedure in Siemens FAQ 22406701 for the persistent reboot-before-installation message. That FAQ was the confirmed successful path in this case.
- Record the exact installer message and confirm that restarting Windows does not clear it.
- Follow Siemens FAQ 22406701 completely.
- Restart the PC if the Siemens procedure requires it, then launch the WinCC 2007 installation again.
Evaluate the Cleanup Tool Separately
| Action | Observed result | Decision |
|---|---|---|
| Reboot the PC | The prompt remained. | Do not repeat reboots as the only corrective action. |
| Run Clean Up Support Tool V1.3 from Siemens FAQ 28465761 | The same installation error reportedly remained. | Do not treat cleanup as the confirmed fix for this case. |
| Apply Siemens FAQ 22406701 | The problem was reported as solved. | Use this as the primary resolution path for the matching prompt. |
A request to manipulate registry keys appeared during troubleshooting, but the evidence provides no validated keys or edit procedure. Do not infer or delete registry entries from this case; use the documented Siemens procedure.
Verify Recovery
Relaunch the WinCC 2007 installer and verify that the reboot-before-installation message no longer appears and installation can proceed. This evidence confirms removal of the installation block only; it does not establish successful completion, licensing, or runtime operation of WinCC 2007.
FAQ
Why does WinCC 2007 still ask for a reboot after restarting?
The reported installation state persisted after a normal reboot. For the matching “Please reboot before installing any more programs” message, apply Siemens FAQ 22406701.
Does Clean Up Support Tool V1.3 fix the WinCC 2007 reboot prompt?
It did not clear the error in this case. The tool was identified through Siemens FAQ 28465761, but FAQ 22406701 was the confirmed successful path.
Should I delete WinCC registry keys after uninstalling WinCC 2005?
No registry-edit procedure or validated key is provided by the evidence. Avoid unverified registry changes and follow Siemens FAQ 22406701 instead.