[IntelliJ] Uncaught Exception Error initializing Azure MCP Server: java.net.SocketException: Connection reset java.io.UncheckedIOException: java.net.SocketException: Connection reset

IntelliJ build version: 2026.1 IU-261.22158.277
OS: Mac OS X
JDK: JetBrains s.r.o. 25.0.2
Plugin version: 3.97.4-2026.1
Additional Info: None
Parent component:

com.intellij.openapi.wm.impl.IdeRootPane[,0,0,3440x1410,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: java.net.SocketException: Connection reset, throwable=java.io.UncheckedIOException: java.net.SocketException: Connection reset
	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)
	at com.microsoft.azure.toolkit.intellij.azuremcp.GithubCopilotMcpInitializer.execute(G

Start with GithubClient.downloadToFile at line 118 and its executeWithRetry path at line 64, then follow AzureMcpPackageManager.getAzureMcpExecutable and GithubCopilotMcpInitializer.initializeAzureMcpServer. Reproduce the Azure MCP initialization on the reported IntelliJ and macOS versions and determine the expected handling when the download raises a connection reset; done means initialization no longer produces this uncaught exception.