# \#exception

**URL:** https://tech-community.robotics.abb.com/tag/exception/949.md

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## [Find All References / Find (ctrl+F) .NET exception](https://tech-community.robotics.abb.com/t/find-all-references-find-ctrl-f-net-exception/11752)

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**Author:** [@Daper](https://tech-community.robotics.abb.com/u/Daper)\
**Replies:** 0\
**Last updated:** [January 20, 2025, 9:31am UTC](https://tech-community.robotics.abb.com/t/find-all-references-find-ctrl-f-net-exception/11752 "2025-01-20T09:31:46Z")

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Hi, While this behaviour was not encoutered during the previous days, I suddenly got the following error when I tried to find all references of a variable throughout the program or simply search by name within the task: …

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## [Unable to Enable virtual controller.](https://tech-community.robotics.abb.com/t/unable-to-enable-virtual-controller/9989)

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**Author:** [@jonty](https://tech-community.robotics.abb.com/u/jonty)\
**Replies:** 9\
**Last updated:** [February 21, 2021, 7:12am UTC](https://tech-community.robotics.abb.com/t/unable-to-enable-virtual-controller/9989 "2021-02-21T07:12:56Z")

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Hi there, I am trying to use robot studio with virtual controller but when it starts it showing me the following error attached in the picture below. Any suggestion would be appreciated. Thanks

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## [RobotStudio WebException 401 Unauthorized - Apply Changes in Module](https://tech-community.robotics.abb.com/t/robotstudio-webexception-401-unauthorized-apply-changes-in-module/9749)

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**Author:** [@MarkusH35](https://tech-community.robotics.abb.com/u/MarkusH35)\
**Replies:** 3\
**Last updated:** [October 15, 2020, 6:28pm UTC](https://tech-community.robotics.abb.com/t/robotstudio-webexception-401-unauthorized-apply-changes-in-module/9749 "2020-10-15T18:28:44Z")

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Hello everybody, I want to “Apply” some changes to a real IRC5C Controller. The first attempt after restarting the Contoller works without an error but from then, each time I try to Apply Changes i´m getting the followi…