topic Connection not established. Retry ? (you can work offline by selecting 'NO') in Kepware

Connection not established. Retry ? (you can work offline by selecting 'NO')

BR_14285793 — Thu, 05 Feb 2026 13:32:47 GMT

Hello,

I'm getting this error: Connection not established. Retry ? (you can work offline by selecting 'NO')

Data collection stopped for no reason.

Rebooted the server and getting this error

KEPServerEX\Configuration Connection attempt to runtime failed. | Runtime host address = '127.0.0.1:32402', User = 'Default User', Reason = 'This operation returned because the timeout period expired.'.

Version: 6.7.1067

Any ideas ?

Re: Connection not established. Retry ? (you can work offline by selecting 'NO')

BR_14285793 — Thu, 05 Feb 2026 16:23:30 GMT

Issue was related to the Cortex Antivirus.

who has the exclusions required for Kepware versions 5, 6, 7 to be added to anti-virus exclusions ?

Re: Connection not established. Retry ? (you can work offline by selecting 'NO')

MRohilla — Tue, 10 Feb 2026 15:34:59 GMT

Article -"Configuration client is not connecting to the Runtime service in PTC Kepware Products": https://www.ptc.com/pt/support/article/cs296144