# Tags/OPC Uncertain\_LastKnownValue

**URL:** <https://forum.inductiveautomation.com/t/tags-opc-uncertain-lastknownvalue/55120>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [January 18, 2022, 4:36pm UTC](https://forum.inductiveautomation.com/t/tags-opc-uncertain-lastknownvalue/55120 "2022-01-18T16:36:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Eric\_Moynihan](https://avatars.discourse-cdn.com/v4/letter/e/2acd7d/32.png) [@Eric\_Moynihan](https://forum.inductiveautomation.com/u/Eric_Moynihan)\
**Post date:** [January 18, 2022, 4:36pm UTC](https://forum.inductiveautomation.com/t/tags-opc-uncertain-lastknownvalue/55120/1 "2022-01-18T16:36:20Z")

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suddenly my tags are showing a clock symbol in the right corner of each text field and when I hover over the tag value it says Uncertain\_LastKnownValue