microsoft / microsoft/azure-tools-for-java
[IntelliJ] Uncaught Exception Error initializing Azure MCP Server: javax.net.ssl.SSLException: (bad_record_mac) Tag mismatch java.io.UncheckedIOException: javax.net.ssl.SSLException: (bad_record_mac) Tag mismatch
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- Dominant language
- Java
- Stars
- 262
- Forks
- 185
- Avg merge
- 2d 21h
- Merged PRs (30d)
- 1
Description
IntelliJ build version: 2026.1.4 IU-261.26222.65
OS: Windows 11
JDK: JetBrains s.r.o. 25.0.3
Plugin version: 3.97.7-2026.1
Additional Info: None
Parent component:
com.intellij.openapi.wm.impl.IdeRootPane[,7,7,1536x912,layout=com.intellij.openapi.wm.impl.IdeRootPane$CustomHeaderRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]
Error message:
IdeaLoggingEvent[message=Error initializing Azure MCP Server: javax.net.ssl.SSLException: (bad_record_mac) Tag mismatch, throwable=java.io.UncheckedIOException: javax.net.ssl.SSLException: (bad_record_mac) Tag mismatch
at com.microsoft.azure.toolkit.intellij.azuremcp.GithubClient.lambda$downloadToFile$2(GithubClient.java:123)
at com.microsoft.azure.toolkit.intellij.azuremcp.GithubClient.executeWithRetry(GithubClient.java:64)
at com.microsoft.azure.toolkit.intellij.azuremcp.GithubClient.downloadToFile(GithubClient.java:118)
at com.microsoft.azure.toolkit.intellij.azuremcp.AzureMcpPackageManager.getAzureMcpExecutable(AzureMcpPackageManager.java:60)
at com.microsoft.azure.toolkit.intellij.azuremcp.GithubCopilotMcpInitializer.initializeAzureMcpServer(GithubCopilotMcpInitializer.java:87
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the stack-trace entry points in GithubClient.java, especially downloadToFile and executeWithRetry, then follow AzureMcpPackageManager.getAzureMcpExecutable and GithubCopilotMcpInitializer.initializeAzureMcpServer. Reproduce Azure MCP initialization on the reported IntelliJ, Windows, and JDK versions, and determine what allows the download to complete without the SSLException.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- azure, java
- Domain
- cloud, devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 42/100