Unable to see any VARIABLES or WATCH variable values

Issue Type: Bug

I am using Visual Studio Code with the Microsoft C/C++ extension to debug a native 64 bit Windows application, compiled using Visual Studio 2019, latest update. Sometimes you cannot see any local variables, the display just shows this in red:

Error processing 'variables' request.

The watch window shows: An unspecified error has occurred.

Please see the screen show.

Sometimes when you step through or over code, you temporarily see this status, and it goes away again. But in the last few weeks, especially after the last few C/C++ extension updates, it seems far more common and does not recover, unless you restart the debugging session, and then maybe it will work again for some time.

PLEASE HELP. Sadly the code project is massive, not easy to share, and it does not always happen. What extra information can I provide, is there some sort of log file, or way to debug this extension.

Visual Studio Code has been work so well, and this used to never happen, but in recent times this has become more common.

Extension version: 1.7.1
VS Code version: Code 1.61.2 (6cba118ac49a1b88332f312a8f67186f7f3c1643, 2021-10-19T14:57:20.575Z)
OS version: Windows_NT x64 10.0.19043
Restricted Mode: No

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まず、報告されたネイティブ 64-bit Windows アプリケーションをデバッグしながら、VS Code C/C++ extension で欠落している Variables と Watch の値を再現します。issue で要求されている extension と debugger のログを収集し、ステップ実行時とセッションを再起動した場合の挙動を比較します。再現可能な原因を特定し、信頼できる変数検査を復旧できれば完了です。