# OPC UA communication keep losing tags in browser

**URL:** <https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554>\
**Category:** Ignition\
**Created:** [November 6, 2023, 4:43pm UTC](https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554 "2023-11-06T16:43:05Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Amir\_Farmanbar](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@Amir\_Farmanbar](https://forum.inductiveautomation.com/u/Amir_Farmanbar)\
**Post date:** [November 6, 2023, 4:43pm UTC](https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554/1 "2023-11-06T16:43:05Z")

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I have an issue in OPC browser that keep losing tags intermittently. I need to do the machine cycle power to fix the issue. what can be the root cause?

you can see an example of folder E77 is missing in machine 6 in attached screenshot.

 ![E77](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/d/ad8b27015bccf878911b62f1e40fd9a99b3c620b.png)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [November 6, 2023, 4:48pm UTC](https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554/2 "2023-11-06T16:48:36Z")

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When it goes missing try connecting with a 3rd party UA client like UaExpert and see if it's also missing.

Without maybe a Wireshark capture of the browse made with security turned off for the connection it's difficult to tell what side the problem lies on. Since a power cycle of the machine/server brings it back it sounds like an issue on the server side...

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**Author:** ![Amir\_Farmanbar](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@Amir\_Farmanbar](https://forum.inductiveautomation.com/u/Amir_Farmanbar)\
**Post date:** [November 6, 2023, 5:57pm UTC](https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554/3 "2023-11-06T17:57:29Z")

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I checked it with UA Expert as well. The same missing tags that I saw in OPC browser.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [November 6, 2023, 6:02pm UTC](https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554/4 "2023-11-06T18:02:50Z")

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Ok, then your problem is likely with the server, and you should contact that vendor for support.

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**Author:** ![Amir\_Farmanbar](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@Amir\_Farmanbar](https://forum.inductiveautomation.com/u/Amir_Farmanbar)\
**Post date:** [November 6, 2023, 6:34pm UTC](https://forum.inductiveautomation.com/t/opc-ua-communication-keep-losing-tags-in-browser/81554/5 "2023-11-06T18:34:49Z")

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Thanks, will contact them.