I launched the setup with Administrator privileges, but the installation fails with the below error.
Service 'UIFlowService' (UIFlowService) failed to start. Verify that you have sufficient privileges to start system services.

[32E0:5D40][2020-05-06T19:46:46]i001: Burn v3.11.1.2318, Windows v10.0 (Build 16299: Service Pack 0), path: C:\Users\user\AppData\Local\Temp\2\{AAB0CE16-C020-4FC0-A6F9-5589EB6FCEAB}\.cr\Setup.Microsoft.PowerAutomate.UIFlow (1).exe
[32E0:5D40][2020-05-06T19:46:46]i000: Initializing string variable 'BundleVersion' to value '1.0.00548.20118'
[32E0:5D40][2020-05-06T19:46:46]i000: Initializing string variable 'RegistryKeyPath' to value 'SOFTWARE\Microsoft\UI flows'
[32E0:5D40][2020-05-06T19:46:46]i000: Initializing string variable 'InstallPath' to value '[ProgramFilesFolder]Microsoft UI flows'
[32E0:5D40][2020-05-06T19:46:46]i000: Initializing string variable 'AgentClientId' to value 'static'
[32E0:5D40][2020-05-06T19:46:46]i009: Command Line: '"-burn.clean.room=C:\Users\user\Downloads\Setup.Microsoft.PowerAutomate.UIFlow (1).exe" -burn.filehandle.attached=668 -burn.filehandle.self=676'
[32E0:5D40][2020-05-06T19:46:46]i000: Setting string variable 'WixBundleOriginalSource' to value 'C:\Users\user\Downloads\Setup.Microsoft.PowerAutomate.UIFlow (1).exe'
[32E0:5D40][2020-05-06T19:46:46]i000: Setting string variable 'WixBundleOriginalSourceFolder' to value 'C:\Users\user\Downloads\'
[32E0:5D40][2020-05-06T19:46:48]i000: Setting string variable 'WixBundleLog' to value 'C:\Users\user\AppData\Local\Temp\UI_flows_20200506194648.log'
[32E0:5D40][2020-05-06T19:46:48]i000: Setting string variable 'WixBundleName' to value 'UI flows'
[32E0:5D40][2020-05-06T19:46:48]i000: Setting string variable 'WixBundleManufacturer' to value 'Microsoft Corporation'
[32E0:5D40][2020-05-06T19:46:48]i000: Loading managed bootstrapper application.
[32E0:5D40][2020-05-06T19:46:49]i000: Creating BA thread to run asynchronously.
[32E0:5F58][2020-05-06T19:46:49]i000: Running bootstrap application.
[32E0:5F58][2020-05-06T19:46:49]i000: UIVisible: True
[32E0:5D40][2020-05-06T19:46:49]i100: Detect begin, 4 packages
[32E0:5D40][2020-05-06T19:46:49]i000: Product or related product not found: {D430A057-BAED-421C-A12C-C4EFF28670C6}
[32E0:5D40][2020-05-06T19:46:49]i000: Setting version variable 'GatewayInstalledVersion' to value '0.0.0.0'
[32E0:5D40][2020-05-06T19:46:49]i000: Setting string variable 'NETFRAMEWORK45' to value '528049'
[32E0:5D40][2020-05-06T19:46:49]i000: Registry key not found. Key = 'SOFTWARE\Microsoft\UI flows'
[32E0:5D40][2020-05-06T19:46:49]i000: Registry key not found. Key = 'SOFTWARE\Microsoft\UI flows'
[32E0:5D40][2020-05-06T19:46:49]i052: Condition 'PersistedAgentClientId' evaluates to false.
[32E0:5D40][2020-05-06T19:46:49]i052: Condition 'PersistedInstallPath' evaluates to false.
[32E0:5D40][2020-05-06T19:46:49]i052: Condition 'NETFRAMEWORK45 >= 461808' evaluates to true.
[32E0:5D40][2020-05-06T19:46:49]i101: Detected package: NetFx472Web, state: Present, cached: None
[32E0:5D40][2020-05-06T19:46:49]i101: Detected package: VCRedist64, state: Absent, cached: None
[32E0:5D40][2020-05-06T19:46:49]i101: Detected package: VCRedist86, state: Absent, cached: None
[32E0:5D40][2020-05-06T19:46:49]i101: Detected package: MicrosoftFlowRPA, state: Absent, cached: None
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.Agent, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.Recorder, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.ThirdPartyNotice, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.Notifier, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.UIFlowsClientDll, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.RDPConnections, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.ChromeExtension, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.StartupNotifier, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.Settings, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.LogShipper, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.LogShipperOptIn, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.UIFlowService, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i104: Detected package: MicrosoftFlowRPA, feature: Microsoft.Flow.RPA.AgentLauncher, state: Absent
[32E0:5D40][2020-05-06T19:46:49]i000: Gateway is not installed.
[32E0:5D40][2020-05-06T19:46:49]i000: Found bundle variable InstallPath: 'C:\Program Files (x86)\Microsoft UI flows'.
[32E0:5D40][2020-05-06T19:46:49]i199: Detect complete, result: 0x0
[32E0:5D40][2020-05-06T19:46:55]i200: Plan begin, 4 packages, action: Install
[32E0:5D40][2020-05-06T19:46:55]i000: Setting string variable 'InstallPath' to value 'C:\Program Files (x86)\Microsoft UI flows'
[32E0:5D40][2020-05-06T19:46:55]i000: Setting string variable 'AgentClientId' to value 'rgjXrjzuNERq8H9uNRzJWiMyhc/9OWhG'
[32E0:5D40][2020-05-06T19:46:55]w321: Skipping dependency registration on package with no dependency providers: NetFx472Web
[32E0:5D40][2020-05-06T19:46:55]i052: Condition 'VersionNT64' evaluates to true.
[32E0:5D40][2020-05-06T19:46:55]w321: Skipping dependency registration on package with no dependency providers: VCRedist64
[32E0:5D40][2020-05-06T19:46:55]i000: Setting string variable 'WixBundleLog_VCRedist64' to value 'C:\Users\user\AppData\Local\Temp\UI_flows_20200506194648_000_VCRedist64.log'
[32E0:5D40][2020-05-06T19:46:55]i052: Condition 'NOT VersionNT64' evaluates to false.
[32E0:5D40][2020-05-06T19:46:55]w321: Skipping dependency registration on package with no dependency providers: VCRedist86
[32E0:5D40][2020-05-06T19:46:55]i204: Plan 13 msi features for package: MicrosoftFlowRPA
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.Agent, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.Recorder, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.ThirdPartyNotice, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.Notifier, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.UIFlowsClientDll, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.RDPConnections, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.ChromeExtension, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.StartupNotifier, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.Settings, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.LogShipper, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.LogShipperOptIn, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.UIFlowService, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i203: Planned feature: Microsoft.Flow.RPA.AgentLauncher, state: Absent, default requested: Unknown, ba requested: Local, execute action: AddLocal, rollback action: Remove
[32E0:5D40][2020-05-06T19:46:55]i000: Setting string variable 'WixBundleRollbackLog_MicrosoftFlowRPA' to value 'C:\Users\user\AppData\Local\Temp\UI_flows_20200506194648_001_MicrosoftFlowRPA_rollback.log'
[32E0:5D40][2020-05-06T19:46:55]i000: Setting string variable 'WixBundleLog_MicrosoftFlowRPA' to value 'C:\Users\user\AppData\Local\Temp\UI_flows_20200506194648_001_MicrosoftFlowRPA.log'
[32E0:5D40][2020-05-06T19:46:55]i201: Planned package: NetFx472Web, state: Present, default requested: Present, ba requested: Present, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[32E0:5D40][2020-05-06T19:46:55]i201: Planned package: VCRedist64, state: Absent, default requested: Present, ba requested: Present, execute: Install, rollback: None, cache: Yes, uncache: No, dependency: None
[32E0:5D40][2020-05-06T19:46:55]i201: Planned package: VCRedist86, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[32E0:5D40][2020-05-06T19:46:55]i201: Planned package: MicrosoftFlowRPA, state: Absent, default requested: Present, ba requested: Present, execute: Install, rollback: Uninstall, cache: Yes, uncache: No, dependency: Register
[32E0:5D40][2020-05-06T19:46:55]i299: Plan complete, result: 0x0
[32E0:5D40][2020-05-06T19:46:55]i300: Apply begin
[32E0:5D40][2020-05-06T19:46:55]i010: Launching elevated engine process.
[32E0:5D40][2020-05-06T19:46:58]i011: Launched elevated engine process.
[32E0:5D40][2020-05-06T19:46:58]i012: Connected to elevated engine.
[2050:399C][2020-05-06T19:46:59]i358: Pausing automatic updates.
[2050:399C][2020-05-06T19:46:59]i359: Paused automatic updates.
[2050:399C][2020-05-06T19:46:59]i360: Creating a system restore point.
[2050:399C][2020-05-06T19:46:59]w363: Could not create system restore point, error: 0x80070422. Continuing...
[2050:399C][2020-05-06T19:46:59]i370: Session begin, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{396ab4ce-ba5a-4654-8420-dafd00f35d04}, options: 0x7, disable resume: No
[2050:399C][2020-05-06T19:47:43]i000: Caching bundle from: 'C:\Users\user\AppData\Local\Temp\2\{BFEF295F-3856-4CBD-B819-43CCEEBCA4FE}\.be\Setup.Microsoft.PowerAutomate.UIFlow.exe' to: 'C:\ProgramData\Package Cache\{396ab4ce-ba5a-4654-8420-dafd00f35d04}\Setup.Microsoft.PowerAutomate.UIFlow.exe'
[2050:399C][2020-05-06T19:47:43]i320: Registering bundle dependency provider: {396ab4ce-ba5a-4654-8420-dafd00f35d04}, version: 1.0.548.20118
[2050:399C][2020-05-06T19:47:43]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{396ab4ce-ba5a-4654-8420-dafd00f35d04}, resume: Active, restart initiated: No, disable resume: No
[2050:4B44][2020-05-06T19:47:44]i305: Verified acquired payload: VCRedist64 at path: C:\ProgramData\Package Cache\.unverified\VCRedist64, moving to: C:\ProgramData\Package Cache\B87C38D093872D7BE7E191F01107B39C87888A5A\VC_redist.x64.exe.
[2050:4B44][2020-05-06T19:47:44]i305: Verified acquired payload: MicrosoftFlowRPA at path: C:\ProgramData\Package Cache\.unverified\MicrosoftFlowRPA, moving to: C:\ProgramData\Package Cache\{BB64EC63-DB90-4195-8705-B3CA32171EEE}v1.0.00548.20118\Microsoft.Flow.UIflow.msi.
[2050:399C][2020-05-06T19:47:44]i301: Applying execute package: VCRedist64, action: Install, path: C:\ProgramData\Package Cache\B87C38D093872D7BE7E191F01107B39C87888A5A\VC_redist.x64.exe, arguments: '"C:\ProgramData\Package Cache\B87C38D093872D7BE7E191F01107B39C87888A5A\VC_redist.x64.exe" /install /quiet /norestart'
[32E0:5D40][2020-05-06T19:47:46]i319: Applied execute package: VCRedist64, result: 0x0, restart: None
[2050:399C][2020-05-06T19:47:46]i323: Registering package dependency provider: {BB64EC63-DB90-4195-8705-B3CA32171EEE}, version: 1.0.00548.20118, package: MicrosoftFlowRPA
[2050:399C][2020-05-06T19:47:47]i301: Applying execute package: MicrosoftFlowRPA, action: Install, path: C:\ProgramData\Package Cache\{BB64EC63-DB90-4195-8705-B3CA32171EEE}v1.0.00548.20118\Microsoft.Flow.UIflow.msi, arguments: ' ARPSYSTEMCOMPONENT="1" MSIFASTINSTALL="7" FLOWRPAINSTALLDIR="C:\Program Files (x86)\Microsoft UI flows" FLOWRPACLIENTID="rgjXrjzuNERq8H9uNRzJWiMyhc/9OWhG" ADDLOCAL="Microsoft.Flow.RPA.Agent,Microsoft.Flow.RPA.Recorder,Microsoft.Flow.RPA.ThirdPartyNotice,Microsoft.Flow.RPA.Notifier,Microsoft.Flow.RPA.UIFlowsClientDll,Microsoft.Flow.RPA.RDPConnections,Microsoft.Flow.RPA.ChromeExtension,Microsoft.Flow.RPA.StartupNotifier,Microsoft.Flow.RPA.Settings,Microsoft.Flow.RPA.LogShipper,Microsoft.Flow.RPA.LogShipperOptIn,Microsoft.Flow.RPA.UIFlowService,Microsoft.Flow.RPA.AgentLauncher"'
[2050:399C][2020-05-06T19:48:45]e000: Error 0x80070643: Failed to install MSI package.
[2050:399C][2020-05-06T19:48:45]e000: Error 0x80070643: Failed to execute MSI package.
[32E0:5D40][2020-05-06T19:48:45]e000: Error 0x80070643: Failed to configure per-machine MSI package.
[32E0:5D40][2020-05-06T19:48:45]i319: Applied execute package: MicrosoftFlowRPA, result: 0x80070643, restart: None
[32E0:5D40][2020-05-06T19:48:45]e000: Error 0x80070643: Failed to execute MSI package.
[2050:399C][2020-05-06T19:48:45]i318: Skipped rollback of package: MicrosoftFlowRPA, action: Uninstall, already: Absent
[32E0:5D40][2020-05-06T19:48:45]i319: Applied rollback package: MicrosoftFlowRPA, result: 0x0, restart: None
[2050:399C][2020-05-06T19:48:45]i329: Removed package dependency provider: {BB64EC63-DB90-4195-8705-B3CA32171EEE}, package: MicrosoftFlowRPA
[2050:399C][2020-05-06T19:48:45]i351: Removing cached package: MicrosoftFlowRPA, from path: C:\ProgramData\Package Cache\{BB64EC63-DB90-4195-8705-B3CA32171EEE}v1.0.00548.20118\
[2050:399C][2020-05-06T19:48:45]i351: Removing cached package: VCRedist64, from path: C:\ProgramData\Package Cache\B87C38D093872D7BE7E191F01107B39C87888A5A\
[2050:399C][2020-05-06T19:48:45]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{396ab4ce-ba5a-4654-8420-dafd00f35d04}, resume: None, restart: None, disable resume: No
[2050:399C][2020-05-06T19:48:45]i330: Removed bundle dependency provider: {396ab4ce-ba5a-4654-8420-dafd00f35d04}
[2050:399C][2020-05-06T19:48:45]i352: Removing cached bundle: {396ab4ce-ba5a-4654-8420-dafd00f35d04}, from path: C:\ProgramData\Package Cache\{396ab4ce-ba5a-4654-8420-dafd00f35d04}\
[2050:399C][2020-05-06T19:48:45]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{396ab4ce-ba5a-4654-8420-dafd00f35d04}, resume: None, restart initiated: No, disable resume: No
[32E0:5D40][2020-05-06T19:48:45]e000: Apply completion failed. Code: 0x80070643. Message: Service 'UIFlowService' (UIFlowService) failed to start. Verify that you have sufficient privileges to start system services.
[32E0:5D40][2020-05-06T19:48:45]i399: Apply complete, result: 0x80070643, restart: None, ba requested restart: No