What are CAWPROP.DLL Error Messages?

Dynamic Link Library CAWPROP.DLL Errors

CAWPROP.DLL is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like CAWPROP.DLL, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like Setup.exe - to follow. These files were created so that multiple programs (eg. ChemDraw Ultra) could share the same CAWPROP.DLL file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when CAWPROP.DLL is attempted to be loaded either when ChemDraw Ultra is starting up, or in some cases already running. Some of the most common CAWPROP.DLL errors include:

• Access Violation at address - CAWPROP.DLL.
• CAWPROP.DLL could not be found.
• Cannot find C:\ProgramData\CambridgeSoft\ChemOffice2010\ChemDraw\ChemProp\CAWPROP.DLL.
• Cannot register CAWPROP.DLL.
• Cannot start ChemDraw Ultra. A required component is missing: CAWPROP.DLL. Please install ChemDraw Ultra again.
• Failed to load CAWPROP.DLL.
• The application has failed to start because CAWPROP.DLL was not found.
• The file CAWPROP.DLL is missing or corrupt.
• This application failed to start because CAWPROP.DLL was not found. Re-installing the application may fix this problem.

Your CAWPROP.DLL file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with ChemDraw Ultra), or deleted by a malware infection. Furthermore, CAWPROP.DLL file corruption could be caused from a power outage when loading ChemDraw Ultra, system crash while loading CAWPROP.DLL, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix CAWPROP.DLL Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your CAWPROP.DLL issue. These troubleshooting steps are listed in the recommended order of execution.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. When you see the search box, type "System Restore" and press "ENTER".
3. In the search results, find and click System Restore.
4. Please enter the administrator password (if applicable / prompted).
5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
6. Restore your computer to that backup image.

If the Step 1 fails to resolve the CAWPROP.DLL error, please proceed to the Step 2 below.

You can uninstall ChemDraw Ultra software by following these instructions (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. In the search box, type "Uninstall" and press "ENTER".
3. In the search results, find and click "Add or Remove Programs"
4. Find the entry for ChemDraw Ultra 9 and click "Uninstall"
5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall ChemDraw Ultra software.

If this Step 2 fails as well, please proceed to the Step 3 below.

ChemDraw Ultra 9

CambridgeSoft

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many CAWPROP.DLL error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

1. Hit the Windows Start button
2. In the search box, type "Update" and press "ENTER".
3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
4. If updates are available for download, click "Install Updates".
5. After the update is completed, restart your PC.

If Windows Update failed to resolve the CAWPROP.DLL error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your CAWPROP.DLL File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate CAWPROP.DLL file version. We maintain a comprehensive database of 100% malware-free CAWPROP.DLL files for every applicable version of ChemDraw Ultra. Please follow the steps below to download and properly replace you file:

1. Locate your Windows operating system version in the list of below "Download CAWPROP.DLL Files".
2. Click the appropriate "Download Now" button and download your Windows file version.
3. Copy this file to the appropriate ChemDraw Ultra folder location:
   
   Windows 10: C:\ProgramData\CambridgeSoft\ChemOffice2010\ChemDraw\ChemProp\
   
4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

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