Uninstalling Python 3.8.0a1

I'm attempting to uninstall version 3.8.0a1 of Python from a Windows 10 system. I am using the 'uninstall' option from the Settings / Apps and Features Windows 10 "uninstall a program" page. It fails saying "pipe is being closed".

I tried (on advice from a forum or two) to "repair", but that fails with the same error. It says a pipe is being closed, and refers to "BURN_ELEVATION_MESSAGE_TYPE_EXECUTE_MSI_PACKAGE". The last 20k of the log file from the uninstall is below; anyone have any ideas?

[334C:3CE8][2019-11-24T07:39:37]i000: Setting string variable 'WixBundleLog_core_AllUsers_pdb' to value 'C:\Users\ralph\AppData\Local\Temp\Python 3.8.0a1 (64-bit)_20191124073937_004_core_AllUsers_pdb.log'
[334C:3CE8][2019-11-24T07:39:37]w322: Skipping cross-scope dependency registration on package: core_AllUsers, bundle scope: PerUser, package scope: PerMachine
[334C:3CE8][2019-11-24T07:39:37]i000: Setting string variable 'WixBundleRollbackLog_core_AllUsers' to value 'C:\Users\ralph\AppData\Local\Temp\Python 3.8.0a1 (64-bit)_20191124073937_005_core_AllUsers_rollback.log'
[334C:3CE8][2019-11-24T07:39:37]i000: Setting string variable 'WixBundleLog_core_AllUsers' to value 'C:\Users\ralph\AppData\Local\Temp\Python 3.8.0a1 (64-bit)_20191124073937_005_core_AllUsers.log'
[334C:3CE8][2019-11-24T07:39:37]w322: Skipping cross-scope dependency registration on package: ucrt_AllUsers, bundle scope: PerUser, package scope: PerMachine
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: compileallOO_JustForMe, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: compileallO_JustForMe, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: compileall_JustForMe, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: compileallOO_AllUsers, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: compileallO_AllUsers, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: compileall_AllUsers, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: path_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: path_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: pip_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: pip_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: launcher_JustForMe, state: Absent, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: launcher_AllUsers, state: Present, default requested: None, ba requested: None, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tcltk_JustForMe_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tcltk_JustForMe_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tcltk_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tcltk_AllUsers_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tcltk_AllUsers_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tcltk_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tools_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: tools_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: doc_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: doc_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: test_JustForMe_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: test_JustForMe_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: test_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: test_AllUsers_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: test_AllUsers_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: test_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: lib_JustForMe_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: lib_JustForMe_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: lib_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: lib_AllUsers_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: lib_AllUsers_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: lib_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: exe_JustForMe_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: exe_JustForMe_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: exe_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: exe_AllUsers_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: exe_AllUsers_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: exe_AllUsers, state: Present, default requested: Absent, ba requested: Absent, execute: Uninstall, rollback: Install, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: dev_JustForMe_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: dev_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: dev_AllUsers_d, state: Present, default requested: Absent, ba requested: Absent, execute: Uninstall, rollback: Install, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: dev_AllUsers, state: Present, default requested: Absent, ba requested: Absent, execute: Uninstall, rollback: Install, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: core_JustForMe_d, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: core_JustForMe_pdb, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: core_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: core_AllUsers_d, state: Present, default requested: Absent, ba requested: Absent, execute: Uninstall, rollback: Install, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: core_AllUsers_pdb, state: Present, default requested: Absent, ba requested: Absent, execute: Uninstall, rollback: Install, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: core_AllUsers, state: Present, default requested: Absent, ba requested: Absent, execute: Uninstall, rollback: Install, cache: No, uncache: Yes, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: ucrt_JustForMe, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: Unregister
[334C:3CE8][2019-11-24T07:39:37]i201: Planned package: ucrt_AllUsers, state: Absent, default requested: Absent, ba requested: Absent, execute: None, rollback: None, cache: No, uncache: No, dependency: None
[334C:3CE8][2019-11-24T07:39:37]i299: Plan complete, result: 0x0
[334C:3CE8][2019-11-24T07:39:37]i300: Apply begin
[334C:3CE8][2019-11-24T07:39:37]i010: Launching elevated engine process.
[334C:3CE8][2019-11-24T07:39:37]i011: Launched elevated engine process.
[334C:3CE8][2019-11-24T07:39:37]i012: Connected to elevated engine.
[20C4:3D9C][2019-11-24T07:39:37]i358: Pausing automatic updates.
[20C4:3D9C][2019-11-24T07:39:37]i359: Paused automatic updates.
[20C4:3D9C][2019-11-24T07:39:37]i360: Creating a system restore point.
[20C4:3D9C][2019-11-24T07:39:37]i361: Created a system restore point.
[334C:3CE8][2019-11-24T07:39:37]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{7babaabf-b08f-4b38-8ec9-df4118e443dc}, resume: Active, restart initiated: No, disable resume: No
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {9C78603B-230E-4E57-9C2C-31739C3498F8}, package: path_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {810571E1-2E23-481E-805E-2F3BC2A72C20}, package: pip_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {C251FFCD-106E-41FD-9ACC-6858E92CF974}, package: launcher_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {D79BBD9A-45F1-45BC-B0ED-24D087A2A1A9}, package: tcltk_JustForMe_d
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {14506599-29E1-4A66-A036-C23FC87D9726}, package: tcltk_JustForMe_pdb
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {D48ED059-28BF-4B5D-9BB0-3B3D92DCF8DC}, package: tcltk_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {F5A547AD-A3F7-4E8D-ADA9-2D873BDAE446}, package: tools_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {D8C143BF-FC7E-4EAC-914C-F96472220BBA}, package: doc_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {F60D2605-D04F-422E-8351-D8C39D2932A0}, package: test_JustForMe_d
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {4246181C-6B83-4095-928F-925164D4C081}, package: test_JustForMe_pdb
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {1712878F-27EF-4CD5-B7E6-F7975DE7BC0D}, package: test_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {4F7A8D1E-6CD1-41F5-B5A3-4AA47545A0D0}, package: lib_JustForMe_d
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {9B5863A3-BB20-4B01-AA77-4F7A1F61CFC4}, package: lib_JustForMe_pdb
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {A241E864-59DC-4C35-AED9-E52A8EFC3A7D}, package: lib_JustForMe
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {C47641D6-6C15-4B43-9CA7-328CC1185665}, package: exe_JustForMe_d
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {489A0A8B-CB69-4310-ADB8-F867DD8C5541}, package: exe_JustForMe_pdb
[334C:3CE8][2019-11-24T07:39:37]i329: Removed package dependency provider: {EB6D0F63-81C0-485D-A346-DCAFA9C8EFC9}, package: exe_JustForMe
[20C4:3D9C][2019-11-24T07:39:37]i301: Applying execute package: exe_AllUsers, action: Uninstall, path: (null), arguments: ' ALLUSERS="1" ARPSYSTEMCOMPONENT="1" MSIFASTINSTALL="7" TARGETDIR="C:\Users\ralph\AppData\Local\Programs\Python\Python38" OPTIONALFEATURESREGISTRYKEY="Software\Python\PythonCore\3.8\InstalledFeatures"'
[334C:3CE8][2019-11-24T07:39:39]i319: Applied execute package: exe_AllUsers, result: 0x0, restart: None
[334C:3CE8][2019-11-24T07:39:39]i329: Removed package dependency provider: {B0994148-3337-4F04-A8AC-D70079AE8923}, package: dev_JustForMe_d
[334C:3CE8][2019-11-24T07:39:39]i329: Removed package dependency provider: {663ABA54-2924-4915-95D8-2C20228E8F36}, package: dev_JustForMe
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write message type to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write send message to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to send BURN_ELEVATION_MESSAGE_TYPE_EXECUTE_MSI_PACKAGE message to per-machine process.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to configure per-machine MSI package.
[334C:3CE8][2019-11-24T07:39:39]i319: Applied execute package: dev_AllUsers_d, result: 0x800700e8, restart: None
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to execute MSI package.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write message type to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write send message to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to send BURN_ELEVATION_MESSAGE_TYPE_EXECUTE_MSI_PACKAGE message to per-machine process.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to configure per-machine MSI package.
[334C:3CE8][2019-11-24T07:39:39]i319: Applied rollback package: dev_AllUsers_d, result: 0x800700e8, restart: None
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write message type to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write send message to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to send BURN_ELEVATION_MESSAGE_TYPE_EXECUTE_MSI_PACKAGE message to per-machine process.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to configure per-machine MSI package.
[334C:3CE8][2019-11-24T07:39:39]i319: Applied rollback package: exe_AllUsers, result: 0x800700e8, restart: None
[334C:3CE8][2019-11-24T07:39:39]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{7babaabf-b08f-4b38-8ec9-df4118e443dc}, resume: ARP, restart: None, disable resume: No
[334C:3CE8][2019-11-24T07:39:39]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{7babaabf-b08f-4b38-8ec9-df4118e443dc}, resume: ARP, restart initiated: No, disable resume: No
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write message type to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to write send message to pipe.
[334C:3CE8][2019-11-24T07:39:39]e000: Error 0x800700e8: Failed to send message to per-machine process.
[334C:3CE8][2019-11-24T07:39:39]i399: Apply complete, result: 0x800700e8, restart: None, ba requested restart:  No