Sorry to hear about the trouble. Please try uninstalling XD using the Adobe Cleaner Tool: https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html
Once uninstalled, please re-install XD and let us know if that helps or if you need any further assistance.
Thanks for the reply, I have done everything u explained a few times now and it's still not working...
everything worked just fine one week ago but after I pushed that update button things started to fail.
Thanks for trying. Please collect and share system logs by following the steps shared here: https://helpx.adobe.com/creative-cloud/kb/cc-log-collector.html
Please add the logs to a shared location like Google Drive or DropBox and share the link through DM by clicking on my name.
Note: While sending the DM, please add the link for this discussion in the subject.
I would like to follow up on your issue. Are you still experiencing the issue with XD or it has been resolved? Actually, we are tracking this issue for our product team to investigate. If the issue still persists, please share the details asked here: https://community.adobe.com/t5/adobe-xd/home-tab-broken-can-t-create-new-document/m-p/11782199#M4421... and we will escalate it further.