Where is the CC app forum?

Geoff_the_kiwi, you can find steps on how to resolve this error at https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html. What step are you utilizing to resolve the error? As Kglad has indicated if you find that the error continues to reemerge then it is likely due to security, anti-virus, anti-malware, or any software that is affecting the files stored on the drive. Please update this public forum discussion with the solution you use to resolve the error. If you would like direct assistance, including as to why the error reoccurs, then please contact our support team at https://helpx.adobe.com/contact.html. I will look forward to your update.