Symptom: The Redis service will not start properly. When trying to start it manually, it gives a 1067 error, "The process terminated unexpectedly"

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As a general rule, we have **SOME** self installing services which fall into this solution pattern:
{ Redis, Now Report Rendering service / Wasp Later Scheduling service }

ASP.NET / IIS / Sql Server / Message Queue services are NOT self installing services, so this general solution cannot be used.

For redis, the easiest way to fix corruption is (stop, delete the service, and reinstall/configure it)

1. Open a Command Prompt window with Run As Administrator, then enter the following commands:

cd %programFiles%

cd Redis-3.0.504-64bit

sc.exe stop "Redis"

sc.exe delete "Redis"

cd ..

ren "Redis-3.0.504-64bit"  "Redis-3.0.504-64bit(deleted.2020.02.27)"

2. Explore the original distribution DVD/ISO or the folder path where you have downloaded and extracted the installer. Open this path: \Program Files 64\Wasp Barcode Technologies\Wasp On-Premises Software\

Right click this file and select Run As Administrator:
  run.redis64.setup.bat

3. Open the Services list to confirm the Redis service is up again and it is set to auto start with retries.