Continuing the discussion from Desktop Client 3.0.3 is here with over a dozen fixes:
Following guided steps to uninstall previous client, then install new client on Windows 8 (64-bit). A series of many errors pops up. I had to abort the process because there are so many errors. Any assistance apprecated.
Details of Client Update Log
Output folder: C:\Program Files (x86)\Nextcloud
Extract: D3Dcompiler_47.dll
Extract: Qt5RemoteObjects.dll… 100%
Extract: Qt5SerialPort.dll
Extract: QtWebEngineProcess.exe… 100%
Extract: concrt140.dll
Extract: msvcp140_1.dll
Extract: msvcp140_2.dll
Extract: msvcp140_codecvt_ids.dll
Extract: nextcloud.VisualElementsManifest.xml
Extract: nextcloud.ico
Extract: nextcloudcmd.exe
Extract: opengl32sw.dll… 100%
Extract: qt.conf
Extract: sync-exclude.lst
Extract: vccorlib140.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtGraphicalEffects
Extract: Blend.qml
Extract: BrightnessContrast.qml
Extract: ColorOverlay.qml
Extract: Colorize.qml
Extract: ConicalGradient.qml
Extract: Desaturate.qml
Extract: DirectionalBlur.qml
Extract: Displace.qml
Extract: DropShadow.qml
Extract: FastBlur.qml
Extract: GammaAdjust.qml
Extract: GaussianBlur.qml
Extract: Glow.qml
Extract: HueSaturation.qml
Extract: InnerShadow.qml
Extract: LevelAdjust.qml
Extract: LinearGradient.qml
Extract: MaskedBlur.qml
Extract: OpacityMask.qml
Extract: RadialBlur.qml
Extract: RadialGradient.qml
Extract: RectangularGlow.qml
Extract: RecursiveBlur.qml
Extract: ThresholdMask.qml
Extract: ZoomBlur.qml
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtGraphicalEffects\private
Extract: DropShadowBase.qml
Extract: DropShadowBase.qmlc
Extract: FastGlow.qml
Extract: FastGlow.qmlc
Extract: FastInnerShadow.qml
Extract: FastInnerShadow.qmlc
Extract: FastMaskedBlur.qml
Extract: FastMaskedBlur.qmlc
Extract: GaussianDirectionalBlur.qml
Extract: GaussianDirectionalBlur.qmlc
Extract: GaussianGlow.qml
Extract: GaussianGlow.qmlc
Extract: GaussianInnerShadow.qml
Extract: GaussianInnerShadow.qmlc
Extract: GaussianMaskedBlur.qml
Extract: GaussianMaskedBlur.qmlc
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQml
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQml\Models.2
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQml\RemoteObjects
Extract: plugins.qmltypes
Extract: qmldir
Extract: qtqmlremoteobjects.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtQml\StateMachine
Extract: plugins.qmltypes
Extract: qmldir
Extract: qtqmlstatemachine.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Controls.2
Extract: AbstractButton.qml
Extract: Action.qml
Extract: ActionGroup.qml
Extract: ApplicationWindow.qml
Extract: BusyIndicator.qml
Extract: Button.qml
Extract: ButtonGroup.qml
Extract: CheckBox.qml
Extract: CheckDelegate.qml
Extract: ComboBox.qml
Extract: Container.qml
Extract: Control.qml
Extract: DelayButton.qml
Extract: Dial.qml
Extract: Dialog.qml
Extract: DialogButtonBox.qml
Extract: Drawer.qml
Extract: Frame.qml
Extract: GroupBox.qml
Extract: ItemDelegate.qml
Extract: Label.qml
Extract: Menu.qml
Extract: MenuBar.qml
Extract: MenuBarItem.qml
Extract: MenuItem.qml
Extract: MenuSeparator.qml
Extract: Page.qml
Extract: PageIndicator.qml
Extract: Pane.qml
Extract: Popup.qml
Extract: ProgressBar.qml
Extract: RadioButton.qml
Extract: RadioDelegate.qml
Extract: RangeSlider.qml
Extract: RoundButton.qml
Extract: ScrollBar.qml
Extract: ScrollIndicator.qml
Extract: ScrollView.qml
Extract: Slider.qml
Extract: SpinBox.qml
Extract: StackView.qml
Extract: SwipeDelegate.qml
Extract: SwipeView.qml
Extract: Switch.qml
Extract: SwitchDelegate.qml
Extract: TabBar.qml
Extract: TabButton.qml
Extract: TextArea.qml
Extract: TextField.qml
Extract: ToolBar.qml
Extract: ToolButton.qml
Extract: ToolSeparator.qml
Extract: ToolTip.qml
Extract: Tumbler.qml
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Controls.2\Fusion
Extract: ApplicationWindow.qml
Extract: BusyIndicator.qml
Extract: Button.qml
Extract: ButtonPanel.qml
Extract: CheckBox.qml
Extract: CheckDelegate.qml
Extract: CheckIndicator.qml
Extract: ComboBox.qml
Extract: DelayButton.qml
Extract: Dial.qml
Extract: Dialog.qml
Extract: DialogButtonBox.qml
Extract: Drawer.qml
Extract: Frame.qml
Extract: GroupBox.qml
Extract: ItemDelegate.qml
Extract: Label.qml
Extract: Menu.qml
Extract: MenuBar.qml
Extract: MenuBarItem.qml
Extract: MenuItem.qml
Extract: MenuSeparator.qml
Extract: Page.qml
Extract: PageIndicator.qml
Extract: Pane.qml
Extract: Popup.qml
Extract: ProgressBar.qml
Extract: RadioButton.qml
Extract: RadioDelegate.qml
Extract: RadioIndicator.qml
Extract: RangeSlider.qml
Extract: RoundButton.qml
Extract: ScrollBar.qml
Extract: ScrollIndicator.qml
Extract: Slider.qml
Extract: SliderGroove.qml
Extract: SliderHandle.qml
Extract: SpinBox.qml
Extract: SwipeDelegate.qml
Extract: Switch.qml
Extract: SwitchDelegate.qml
Extract: SwitchIndicator.qml
Extract: TabBar.qml
Extract: TabButton.qml
Extract: TextArea.qml
Extract: TextField.qml
Extract: ToolBar.qml
Extract: ToolButton.qml
Extract: ToolSeparator.qml
Extract: ToolTip.qml
Extract: Tumbler.qml
Extract: plugins.qmltypes
Extract: qmldir
Extract: qtquickcontrols2fusionstyleplugin.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Controls.2\Imagine
Extract: ApplicationWindow.qml
Extract: BusyIndicator.qml
Extract: Button.qml
Extract: CheckBox.qml
Extract: CheckDelegate.qml
Extract: ComboBox.qml
Extract: DelayButton.qml
Extract: Dial.qml
Extract: Dialog.qml
Extract: DialogButtonBox.qml
Extract: Drawer.qml
Extract: Frame.qml
Extract: GroupBox.qml
Extract: ItemDelegate.qml
Extract: Label.qml
Extract: Menu.qml
Extract: MenuItem.qml
Extract: MenuSeparator.qml
Extract: Page.qml
Extract: PageIndicator.qml
Extract: Pane.qml
Extract: Popup.qml
Extract: ProgressBar.qml
Extract: RadioButton.qml
Extract: RadioDelegate.qml
Extract: RangeSlider.qml
Extract: RoundButton.qml
Extract: ScrollBar.qml
Extract: ScrollIndicator.qml
Extract: Slider.qml
Extract: SpinBox.qml
Extract: StackView.qml
Extract: SwipeDelegate.qml
Extract: SwipeView.qml
Extract: Switch.qml
Extract: SwitchDelegate.qml
Extract: TabBar.qml
Extract: TabButton.qml
Extract: TextArea.qml
Extract: TextField.qml
Extract: ToolBar.qml
Extract: ToolButton.qml
Extract: ToolSeparator.qml
Extract: ToolTip.qml
Extract: Tumbler.qml
Extract: plugins.qmltypes
Extract: qmldir
Extract: qtquickcontrols2imaginestyleplugin.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Controls.2\Material
Extract: ApplicationWindow.qml
Extract: BoxShadow.qml
Extract: BusyIndicator.qml
Extract: Button.qml
Extract: CheckBox.qml
Extract: CheckDelegate.qml
Extract: CheckIndicator.qml
Extract: ComboBox.qml
Extract: CursorDelegate.qml
Extract: DelayButton.qml
Extract: Dial.qml
Extract: Dialog.qml
Extract: DialogButtonBox.qml
Extract: Drawer.qml
Extract: ElevationEffect.qml
Extract: Frame.qml
Extract: GroupBox.qml
Extract: ItemDelegate.qml
Extract: Label.qml
Extract: Menu.qml
Extract: MenuBar.qml
Extract: MenuBarItem.qml
Extract: MenuItem.qml
Extract: MenuSeparator.qml
Extract: Page.qml
Extract: PageIndicator.qml
Extract: Pane.qml
Extract: Popup.qml
Extract: ProgressBar.qml
Extract: RadioButton.qml
Extract: RadioDelegate.qml
Extract: RadioIndicator.qml
Extract: RangeSlider.qml
Extract: RectangularGlow.qml
Extract: RoundButton.qml
Extract: ScrollBar.qml
Extract: ScrollIndicator.qml
Extract: Slider.qml
Extract: SliderHandle.qml
Extract: SpinBox.qml
Extract: StackView.qml
Extract: SwipeDelegate.qml
Extract: SwipeView.qml
Extract: Switch.qml
Extract: SwitchDelegate.qml
Extract: SwitchIndicator.qml
Extract: TabBar.qml
Extract: TabButton.qml
Extract: TextArea.qml
Extract: TextField.qml
Extract: ToolBar.qml
Extract: ToolButton.qml
Extract: ToolSeparator.qml
Extract: ToolTip.qml
Extract: Tumbler.qml
Extract: plugins.qmltypes
Extract: qmldir
Extract: qtquickcontrols2materialstyleplugin.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Controls.2\Universal
Extract: ApplicationWindow.qml
Extract: BusyIndicator.qml
Extract: Button.qml
Extract: CheckBox.qml
Extract: CheckDelegate.qml
Extract: CheckIndicator.qml
Extract: ComboBox.qml
Extract: DelayButton.qml
Extract: Dial.qml
Extract: Dialog.qml
Extract: DialogButtonBox.qml
Extract: Drawer.qml
Extract: Frame.qml
Extract: GroupBox.qml
Extract: ItemDelegate.qml
Extract: Label.qml
Extract: Menu.qml
Extract: MenuBar.qml
Extract: MenuBarItem.qml
Extract: MenuItem.qml
Extract: MenuSeparator.qml
Extract: Page.qml
Extract: PageIndicator.qml
Extract: Pane.qml
Extract: Popup.qml
Extract: ProgressBar.qml
Extract: RadioButton.qml
Extract: RadioDelegate.qml
Extract: RadioIndicator.qml
Extract: RangeSlider.qml
Extract: RoundButton.qml
Extract: ScrollBar.qml
Extract: ScrollIndicator.qml
Extract: Slider.qml
Extract: SpinBox.qml
Extract: StackView.qml
Extract: SwipeDelegate.qml
Extract: Switch.qml
Extract: SwitchDelegate.qml
Extract: SwitchIndicator.qml
Extract: TabBar.qml
Extract: TabButton.qml
Extract: TextArea.qml
Extract: TextField.qml
Extract: ToolBar.qml
Extract: ToolButton.qml
Extract: ToolSeparator.qml
Extract: ToolTip.qml
Extract: Tumbler.qml
Extract: plugins.qmltypes
Extract: qmldir
Extract: qtquickcontrols2universalstyleplugin.dll
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Layouts
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Templates.2
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick\Window.2
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\QtQuick.2
Extract: plugins.qmltypes
Extract: qmldir
Output folder: C:\Program Files (x86)\Nextcloud\bearer
Extract: qgenericbearer.dll
Output folder: C:\Program Files (x86)\Nextcloud\i18n
Extract: client_TW.qm
Extract: client_af.qm
Extract: client_bg.qm
Extract: client_br.qm
Extract: client_ca.qm
Extract: client_cs.qm
Extract: client_da.qm
Extract: client_de.qm
Extract: client_el.qm
Extract: client_en.qm
Extract: client_en_GB.qm
Extract: client_eo.qm
Extract: client_es.qm
Extract: client_es_AR.qm
Extract: client_es_CL.qm
Extract: client_es_CO.qm
Extract: client_es_CR.qm
Extract: client_es_DO.qm
Extract: client_es_EC.qm
Extract: client_es_GT.qm
Extract: client_es_HN.qm
Extract: client_es_MX.qm
Extract: client_es_SV.qm
Extract: client_et.qm
Extract: client_eu.qm
Extract: client_fa.qm
Extract: client_fi.qm
Extract: client_fr.qm
Extract: client_gl.qm
Extract: client_he.qm
Extract: client_hr.qm
Extract: client_hu.qm
Extract: client_id.qm
Extract: client_is.qm
Extract: client_it.qm
Extract: client_ja.qm
Extract: client_ko.qm
Extract: client_lt_LT.qm
Extract: client_lv.qm
Extract: client_mk.qm
Extract: client_nb_NO.qm
Extract: client_nl.qm
Extract: client_oc.qm
Extract: client_pl.qm
Extract: client_pt.qm
Extract: client_pt_BR.qm
Extract: client_ro.qm
Extract: client_ru.qm
Extract: client_sk.qm
Extract: client_sl.qm
Extract: client_sr.qm
Extract: client_sv.qm
Extract: client_th.qm
Extract: client_tr.qm
Extract: client_uk.qm
Extract: client_zh_CN.qm
Extract: client_zh_TW.qm
Output folder: C:\Program Files (x86)\Nextcloud\iconengines
Output folder: C:\Program Files (x86)\Nextcloud\imageformats
Output folder: C:\Program Files (x86)\Nextcloud\nextcloud
Extract: ocsync.dll
Output folder: C:\Program Files (x86)\Nextcloud\platforminputcontexts
Extract: qtvirtualkeyboardplugin.dll
Output folder: C:\Program Files (x86)\Nextcloud\platforms
Output folder: C:\Program Files (x86)\Nextcloud\position
Extract: qtposition_positionpoll.dll
Extract: qtposition_serialnmea.dll
Extract: qtposition_winrt.dll
Output folder: C:\Program Files (x86)\Nextcloud\printsupport
Extract: windowsprintersupport.dll
Output folder: C:\Program Files (x86)\Nextcloud\qmltooling
Extract: qmldbg_debugger.dll
Extract: qmldbg_inspector.dll
Extract: qmldbg_local.dll
Extract: qmldbg_messages.dll
Extract: qmldbg_native.dll
Extract: qmldbg_nativedebugger.dll
Extract: qmldbg_preview.dll
Extract: qmldbg_profiler.dll
Extract: qmldbg_quickprofiler.dll
Extract: qmldbg_server.dll
Extract: qmldbg_tcp.dll
Output folder: C:\Program Files (x86)\Nextcloud\resources
Extract: icudtl.dat
Extract: qtwebengine_devtools_resources.pak
Extract: qtwebengine_resources.pak
Extract: qtwebengine_resources_100p.pak
Extract: qtwebengine_resources_200p.pak
Output folder: C:\Program Files (x86)\Nextcloud\scenegraph
Extract: qsgd3d12backend.dll
Output folder: C:\Program Files (x86)\Nextcloud\shellext
Extract: NCContextMenu.dll
Can’t write: C:\Program Files (x86)\Nextcloud\shellext\NCOverlays.dll
Seems the errors aren’t showing up in the log, so here are some screenshots. There are too many to post, somewhere between dozens and maybe even 100+ errors.