How do I restore Windows 10 Quick Search functionality after Feature Update 1803 install?

After installing the Windows 10 Feature Update version 1803 on May 8, 2018 the Windows Quick Search function stopped working. When I am on the desktop or press the Windows key and begin typing, no search box opens and no search occurs.

I consistently see the following two entries in the Windows Event Viewer Application Log whenever I try to use Quick Search:

Error application log entry:

Faulting application name: SearchUI.exe, version: 10.0.17134.48, time stamp: 0x5ae3f1dd
Faulting module name: edgehtml.dll, version: 11.0.17134.48, time stamp: 0xf3c5bd61
Exception code: 0xc0000602
Fault offset: 0x00000000004e6bba
Faulting process id: 0x3e74
Faulting application start time: 0x01d3ef9220aac5d5
Faulting application path: C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
Faulting module path: C:\WINDOWS\SYSTEM32\edgehtml.dll
Report Id: 3915f2eb-1417-4b6d-b269-411cfc2eb5f6
Faulting package full name: Microsoft.Windows.Cortana_1.10.7.17134_neutral_neutral_cw5n1h2txyewy
Faulting package-relative application ID: CortanaUI

Related Information application log entry that follows the Error entry:

Fault bucket 1244940528049283667, type 5
Event Name: MoAppCrash
Response: Not available
Cab Id: 0

Problem signature:
P1: Microsoft.Windows.Cortana_1.10.7.17134_neutral_neutral_cw5n1h2txyewy
P2: praid:CortanaUI
P3: 10.0.17134.48
P4: 5ae3f1dd
P5: edgehtml.dll
P6: 11.0.17134.48
P7: f3c5bd61
P8: c0000602
P9: 00000000004e6bba
P10: 

Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD321.tmp.mdmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD601.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD621.tmp.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD62B.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD67A.tmp.txt

These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_Microsoft.Window_7ebde89e2a8adfd3a73e49d3d17ff57f6a5ec7_7bec4e88_6352d9a9

Analysis symbol: 
Rechecking for solution: 0
Report Id: 3915f2eb-1417-4b6d-b269-411cfc2eb5f6
Report Status: 268435456
Hashed bucket: ff9df3088f9345a43146ead074dd6253
Cab Guid: 0

Since the Windows 1803 Feature Update was just installed, I did not want to make a bad situation worse by restoring the references edgehtml.dll from my original install disc image.

Has anyone encountered this situation and successfully resolved it?

Thanks, Rob