This appeared after the upgrade to 4.1.23. I upgraded to 4.1.25 this morning but the error persists:
2021-11-22 05:40:30 | Information | Sync started (Default_MENALEUS).
2021-11-22 05:40:30 | Information | Connecting to Google...
2021-11-22 05:40:30 | Warning | Cannot find calendar, id is --- Select a Google Appointment folder ---
2021-11-22 05:40:30 | Information | Connecting to Outlook...
2021-11-22 05:40:30 | Information | Loading Outlook contacts...
2021-11-22 05:40:30 | Information | Loading Google Groups...
2021-11-22 05:40:31 | Information | Loading Google Contacts...
2021-11-22 05:40:31 | Information | You are using the latest version of GCSM.
2021-11-22 05:40:33 | Information | Removing Outlook duplicated contacts...
2021-11-22 05:40:42 | Information | Removing Google duplicated contacts...
2021-11-22 05:40:42 | Information | Matching Outlook and Google contacts...
2021-11-22 05:41:02 | Information | Outlook default time zone: Pacific Standard Time
2021-11-22 05:41:02 | Information | Google default time zone: America/Los_Angeles
2021-11-22 05:41:02 | Information | Loading Google appointments...
2021-11-22 05:41:02 | Error | Google.Apis.Requests.RequestError
Not Found [404]
Errors
Message[Not Found Location[ - ] Reason[notFound] Domain[global]
]
2021-11-22 05:41:02 | Error | Sync failed.
2021-11-22 05:41:02 | Information | Reading version number from sf.net...
This was weird. To see what was up I uninstalled GCS and installed version 4.1.13 which was the last version without this error. That didn't work. Go the same error. So I reinstalled 4.1.25. Go the same error. So for kicks I checked Force RTF Appointments. That worked - no error. Unchecked that option and now everything is working as expected.... Just an FYI I guess.