# OPC Server Connections are missing

**URL:** <https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206>\
**Category:** Ignition\
**Created:** [September 6, 2013, 1:38pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206 "2013-09-06T13:38:11Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![drewdin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/drewdin/32/3363_2.png) [@drewdin](https://forum.inductiveautomation.com/u/drewdin)\
**Post date:** [September 6, 2013, 1:38pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/1 "2013-09-06T13:38:11Z")

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I recently moved from a windows to a Linux gateway, when i restored my project everything seemed to go fine until I checked the OPC connections. They were all missing except for the standard ‘Ignition OPC-UA Server’.

I tried to recreate them thinking since they were kepware connections to a localhost somehow they failed to restore. Upon re-creation of them I got an error that the names are not unique, I then checked the OPC connections status page and they are still there and faulted.

My question is how can i get to these OPC connections so I can modify the connection details so they will stop failing?

Thanks and let me know if there are any questions, I am running version 7.6.2

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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:** [September 6, 2013, 2:04pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/2 "2013-09-06T14:04:32Z")

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Were these OPC-COM or OPC-UA connections?

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<div class="post-metadata">

**Author:** ![drewdin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/drewdin/32/3363_2.png) [@drewdin](https://forum.inductiveautomation.com/u/drewdin)\
**Post date:** [September 6, 2013, 2:24pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/3 "2013-09-06T14:24:39Z")

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They are OPC-DA COM

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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:** [September 6, 2013, 3:18pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/4 "2013-09-06T15:18:49Z")

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Right… they disappeared because the COM module only works on Windows. You can’t make DA/COM connections from a linux gateway.

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**Author:** ![drewdin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/drewdin/32/3363_2.png) [@drewdin](https://forum.inductiveautomation.com/u/drewdin)\
**Post date:** [September 6, 2013, 4:51pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/5 "2013-09-06T16:51:15Z")

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is there any way to remove them, they are just sitting in error along with keeping the names that I need to create the new OPC connections with? Thanks

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<div class="post-metadata">

**Author:** ![drewdin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/drewdin/32/3363_2.png) [@drewdin](https://forum.inductiveautomation.com/u/drewdin)\
**Post date:** [September 8, 2013, 11:49pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/6 "2013-09-08T23:49:57Z")

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if anyone has any help removing the OPC connections i would appreciate it, the only reason this is an issue isI will have to rename over 500 tags since the kepserver name would have changed. Any help would be greatly appreciated.

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**Author:** ![Kyle\_Chase](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Kyle\_Chase](https://forum.inductiveautomation.com/u/Kyle_Chase)\
**Post date:** [September 9, 2013, 5:45am UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/7 "2013-09-09T05:45:47Z")

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Backup system  
Then  
Gateway \> Configuration \> Console \> Advanced \> Raw Settings Viewer

Run these 2 commands.

`DELETE FROM COMSERVERSETTINGSRECORD
DELETE FROM OPCSERVERS WHERE TYPE = 'OPC_COM_ServerType'
`

Restart gateway

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<div class="post-metadata">

**Author:** ![drewdin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/drewdin/32/3363_2.png) [@drewdin](https://forum.inductiveautomation.com/u/drewdin)\
**Post date:** [September 9, 2013, 1:37pm UTC](https://forum.inductiveautomation.com/t/opc-server-connections-are-missing/7206/8 "2013-09-09T13:37:31Z")

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Thats wicked handy, i didn’t know that was there. Thanks!