hi EdT
looks like a classic case of incorrect permissions, from the CBS log
2019-03-23 19:06:27, Info CSI 00000019 Warning: More than one security descriptor for registry key [l:82{41}]"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax":
SD1: [l:206{103}]"D

AI(A;OICI;FA;;;BA)(A;OICI;RCSDKRKW;;;S-1-5-80-2117685068-4011115449-2646761356-2137676340-222423812)"
SD2: [l:206{103}]"D

AI(A;OICI;FA;;;BA)(A;OICI;RCSDKRKW;;;S-1-5-80-2117685068-4011115449-2646761356-2137676340-222423812)"
2019-03-23 19:07:58, Info CSI 0000001c Begin executing advanced installer phase 24 (0x00000018) index 27 (0x000000000000001b) (sequence 52)
Old component: [ml:306{153},l:304{152}]"Microsoft-Windows-Fax-Common, Culture=neutral, Version=6.1.7601.17514, PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=amd64, versionScope=NonSxS"
New component: [l:0]""
Install mode: uninstall
Installer ID: {1b265fd2-721c-4e59-ad55-9d102a5d1d7f}
Installer name: [12]"SppInstaller"
2019-03-23 19:07:58, Info CBS Progress: UI message updated. Operation type: Foundation. Stage: 1 out of 1. Percent progress: 48.
2019-03-23 19:08:01, Info CSI 00000001@2019/3/23:23:08:01.203 [68]"SPP Installer: SLpUpdateComponentTokens completed with hr=0x80070005"
2019-03-23 19:08:01, Info CSI 00000002@2019/3/23:23:08:01.203 [155]"SPP Installer: ProcessInstallOrUninstall (amd64_Microsoft-Windows-Fax-Common_31bf3856ad364e35_6.1.7601.17514_neutral_c8ff4176) completed with hr=0x80070005"
2019-03-23 19:08:01, Error CSI 00000003@2019/3/23:23:08:01.203 (F) CMIADAPTER: Inner Error Message from AI HRESULT = HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED)
[
[19]"Access is denied.
"
]
[gle=0x80004005]
2019-03-23 19:08:01, Error CSI 00000004@2019/3/23:23:08:01.203 (F) CMIADAPTER: AI failed. HRESULT = HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED)
Element:
[208]"<sppInstaller xmlns="urn:schemas-microsoft-com:spp:installer" xmlns:manv3="urn:schemas-microsoft-com:asm.v3" xmlns:spp="urn:schemas-microsoft-com:spp:installer" xmlns:wcs="urn:schemas-microsoft-com:wcs.v1" />"
[gle=0x80004005]
2019-03-23 19:08:01, Error CSI 0000001d@2019/3/23:23:08:01.203 (F) d:\w7rtm\base\wcp\cmiadapter\installers.cpp(352): Error HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED) originated in function Windows::WCP::CmiAdapter::CMIWrapperBasicInstaller::ResolveAndInvokeInstaller expression: hr
[gle=0x80004005]
2019-03-23 19:08:03, Error CSI 00000005@2019/3/23:23:08:03.218 (F) CMIADAPTER: Exiting with HRESULT code = HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED).
[gle=0x80004005]
2019-03-23 19:08:03, Error CSI 0000001e@2019/3/23:23:08:03.218 (F) d:\w7rtm\base\wcp\cmiadapter\installers.cpp(637): Error HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED) originated in function Windows::WCP::CmiAdapter::CMIWrapperBasicInstaller::Uninstall expression: hr
[gle=0x80004005]
This SID begins with S-1-5-80. Notice that the first sub-authority here is 80, which stands for SECURITY_SERVICE_ID_BASE_RID, meaning this SID is issued by the NT SERVICE sub-authority to a service
You will have to check your GPO's and firewall rules
If this is a domestic use only machine suggest you download Tweaking.com Portable, reset the permissions to the default.
When its cleared MIGHT also let you install MightyFax via Compatability mode
Roy
Snick