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2,812 questions
Application Insights DLL Reference Issue for Codeless Monitoring
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Scott R
1
Reputation point
Hello!
Overnight a few days ago one of our applications hosted in Azure reinitialized and started encountering the following error:
Unable to load one or more of the requested types.
Could not load file or assembly 'Microsoft.ApplicationInsights.AspNetCore, Version=2.1.1.0, Culture=neutral, PublicKeyToken=123456...'. The system cannot find the file specified.
The line that it is failing on specifically is a GetAssemblies() call resulting in a ReflectionTypeLoadException error.
The forum post describing something closest to our issue that I could find was this one: https://github.com/microsoft/ApplicationInsights-Home/issues/459
We are utilizing the codeless App Insights module on the app service. The timing seems a bit odd as we did not perform a build/release.
Thank you!
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SwathiDhanwada-MSFT 17,641 Reputation points2020-08-26T15:03:29.397+00:00 @Scott R Thanks for your comment. We are aware of this issue and Engineering team is currently working on the fix. Current mitigation provided by engineering team is to disable Snapshot Debugger. I will notify you once it is fixed.
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Scott R 1 Reputation point
2020-08-26T19:26:42.033+00:00 We tried your suggestion and the error persisted. The following Application Insights settings got it to finally work:
- Interop with Application Insights SDK: OFF
- Profiler: OFF
- Snapshot debugger: OFF
- SQL Commands: ON
This reduced the helpfulness of App Insights by quite a bit, naturally. Do you have a rough estimate of when this should be resolved?
Thank you!
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SwathiDhanwada-MSFT 17,641 Reputation points
2020-08-27T04:38:11.917+00:00 @Scott R Thanks for sharing the additional details. From the information I received, the tentative goal is to have a fix available in all regions within 3 weeks from August 25th 2020, the goal is sooner, but like any change this timeline is tentative.
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SwathiDhanwada-MSFT 17,641 Reputation points
2020-09-21T04:06:22.937+00:00 @Scott R The engineering team is rolling the fix to all the regions, kindly check and revert if you are still facing the issue.
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SwathiDhanwada-MSFT 17,641 Reputation points
2020-10-07T08:19:13.34+00:00 @Scott R The hotfix has been completely deployed. You should be able to enabled Profiler and Snapshot debugger now.
Kindly revert if you are still facing the issue.
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