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)
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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

Open the contributing guide

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 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

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