Uninstall owncloud desktop 2.6.3.14058 impossible

I have tried to uninstall owncloud Desktop using the uninstaller. However the uninstaller cannot locate the original installer in C:\Users****\AppData\Roaming\ownCloud. The old installer is no longer available on the OwnCloud website. Updating first won’t work since the program first tries to uninstall the old version and I end up in a cycle. Any idea?

Client configuration

Client version: OwnCloud Desktop 2.6.3.14058

Operating system: WIndows 10

OS language: English

Qt version used by client package (Linux only, see also Settings dialog):

Installation path of client: C:\Program Files (x86)\ownCloud

Sounds like Problem updating/unistalling owncloud client 2.7.2 x86 on Win10