If the Service stops and isn’t running properly there can be a variety of different causes for this. You can follow the procedures below to fix this in most cases.
Check Event Log, which is here:
Administrative Tools>Event Viewer>Windows Logs>Application
Then select “Filter Current Log…” on the right
and in the “Event sources:” field drop down pick these: SimpleIndex, SimpleIndex Service & SimpleIndexService (and anything else that says SimpleIndex)
Look at the errors, which will tell you why it’s not working.
Find the Temp folder for SimpleIndex and delete any batches that are there after stopping the Service in the SimpleIndex Service Control and Options Panel
Clear Registry of the Temp Files
HKEY_USERS\(User ID for the User Running the Service)\Software\SimpleIndex\
Then delete the folders for the names of the Configurations that are not starting in the Service Control Panel