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: 2025.3.3 IU-253.31033.145
OS: Windows 11
JDK: JetBrains s.r.o. 21.0.10
Plugin version: 3.97.5-2025.3
Additional Info: None
Parent component:

com.intellij.openapi.wm.impl.IdeRootPane[,8,8,1920x1032,invalid,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(GithubCopilotMcpInitialize

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with GithubClient.downloadToFile at GithubClient.java:123 and its retry path in executeWithRetry, then follow AzureMcpPackageManager.getAzureMcpExecutable at line 60. Reproduce the Azure MCP initialization failure on the listed IntelliJ, Windows 11, and JDK versions. Done means the executable download and server initialization no longer fail with the SSLException bad_record_mac error.

Written by the indexing model from the issue text.

Assessment

Tech stack
azure, github, java
Domain
devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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