Can't find error in ULS logs

Question

I have a problem. When I get an error, I see that page with a correlation ID:

But I can't find the error in the ULS logs. In App Server logs is empty by this correlation ID. In FrontEnd Server, I found only this:

Why I don't have errors in logs?

Answer 1

In a load balanced farm, your logs are spread across servers. You can use this PowerShell command to search across those logs for specific correlation IDs:

Merge-SPLogFile -path "D:\ErrorLog.txt" -Correlation "Your-error-correlation-id"

Documentation: https://docs.microsoft.com/en-us/powershell/module/sharepoint-server/Merge-SPLogFile?view=sharepoint-ps

If you still aren't finding your specific error, then the logging level of your farm may not be high enough. You can temporarily increase what is logged through Central Admin and then recreate the error (as possible).

Answer 2

Another way to check

1. Pick any server from your farm and get its ipaddress.
2. In you client machine Run->drivers->host open it in notepad(admin mode) and enter that IP along with webapp url (i.e. 10.125.xxx.xx webapp.domain.com).
3. To double check it Run->CMD->'Enter *ping webapp.domain.com*' it should point you to the same server IP.
4. Now, All set re-iterate your issue, Then go to that server and look for that ID.

Note: You should remove/comment that host entry after testing.