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Unable to download symbols from http://msdl.microsoft.com/download/symbols RRS feed

  • Question

  • Hello,

    Our developers are unable to download any symbols from http://msdl.microsoft.com/download/symbols in the past few days.

    Here is some output from WinDBg with the !sym noisy option enabled:

    0:017> .symfix
    0:017> .sympath
    Symbol search path is: srv*
    Expanded Symbol search path is: cache*;SRV*http://msdl.microsoft.com/download/symbols
    
    ************* Symbol Path validation summary **************
    Response                         Time (ms)     Location
    Deferred                                       srv*
    0:017> !sym noisy
    noisy mode - symbol prompts off
    0:017> .reload /v /f ntdll.dll
    AddImage: C:\Windows\System32\ntdll.dll
     DllBase  = 00007ff9`0f0b0000
     Size     = 001e0000
     Checksum = 001e3d2d
     TimeDateStamp = a29d2306
    SYMSRV:  D:\WinDbg\sym\ntdll.dll\A29D23061e0000\ntdll.dll not found
    SYMSRV:  File: ntdll.dll
    
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Get File Path: /download/symbols/ntdll.dll/A29D23061e0000/ntdll.dll
    
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  D:\WinDbg\sym\ntdll.dll\A29D23061e0000\ntdll.dll not found
    SYMSRV:  http://msdl.microsoft.com/download/symbols/ntdll.dll/A29D23061e0000/ntdll.dll not found
    DBGHELP: D:\WinDbg\ntdll.dll - file not found
    DBGHELP: D:\WinDbg\ntdll.dll - file not found
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  http://msdl.microsoft.com/download/symbols/ntdll.dll/A29D23061e0000/ntdll.dll not found
    SYMSRV:  D:\WinDbg\sym\ntdll.dll\A29D23061e0000\ntdll.dll not found
    DBGHELP: D:\WinDbg\ntdll.dll - file not found
    DBGHELP: D:\WinDbg\ntdll.dll - file not found
    SYMSRV:  D:\WinDbg\sym\ntdll.dll\A29D23061e0000\ntdll.dll not found
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  D:\WinDbg\sym\ntdll.dll\A29D23061e0000\ntdll.dll not found
    SYMSRV:  http://msdl.microsoft.com/download/symbols/ntdll.dll/A29D23061e0000/ntdll.dll not found
    DBGHELP: D:\WinDbg\ntdll.dll - file not found
    DBGHELP: D:\WinDbg\ntdll.dll - file not found
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  http://msdl.microsoft.com/download/symbols/ntdll.dll/A29D23061e0000/ntdll.dll not found
    SYMSRV:  D:\WinDbg\sym\ntdll.dll\A29D23061e0000\ntdll.dll not found
    DBGENG:  C:\Windows\System32\ntdll.dll image header does not match memory image header.
    DBGENG:  C:\Windows\System32\ntdll.dll - Couldn't map image from disk.
    Unable to load image C:\Windows\System32\ntdll.dll, Win32 error 0n2
    DBGENG:  ntdll.dll - Partial symbol image load missing image info
    DBGHELP: Module is not fully loaded into memory.
    DBGHELP: Searching for symbols using debugger-provided data.
    SYMSRV:  D:\WinDbg\sym\ntdll.pdb\114DEF7B4B53F2A07393657FD697E3EB1\ntdll.pdb not found
    SYMSRV:  File: ntdll.pdb
    
    SYMSRV:  Get File Path: /download/symbols/ntdll.pdb/114DEF7B4B53F2A07393657FD697E3EB1/ntdll.pdb
    
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  http://msdl.microsoft.com/download/symbols/ntdll.pdb/114DEF7B4B53F2A07393657FD697E3EB1/ntdll.pdb not found
    SYMSRV:  D:\WinDbg\sym\ntdll.pdb\114DEF7B4B53F2A07393657FD697E3EB1\ntdll.pdb not found
    DBGHELP: ntdll.pdb - file not found
    *** WARNING: Unable to verify timestamp for ntdll.dll
    *** ERROR: Module load completed but symbols could not be loaded for ntdll.dll
    DBGHELP: ntdll - no symbols loaded
    
    ************* Symbol Loading Error Summary **************
    Module name            Error
    ntdll                  PDB not found : cache*
                                    Unable to locate the .pdb file in this location
    
                           An extended error was returned from the WinHttp server : SRV*http://msdl.microsoft.com/download/symbols
                                    The .pdb file is probably no longer indexed in the symbol server share location.
                                    Please verify that you have access to the symbol server from your location.
    0:017> .reload /v /f kernelbase.dll
    AddImage: C:\Windows\System32\KERNELBASE.dll
     DllBase  = 00007ff9`0c1c0000
     Size     = 00266000
     Checksum = 0026a5b2
     TimeDateStamp = 2ef5f131
    SYMSRV:  D:\WinDbg\sym\KERNELBASE.dll\2EF5F131266000\KERNELBASE.dll not found
    SYMSRV:  File: KERNELBASE.dll
    
    SYMSRV:  Get File Path: /download/symbols/KERNELBASE.dll/2EF5F131266000/KERNELBASE.dll
    
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  D:\WinDbg\sym\KERNELBASE.dll\2EF5F131266000\KERNELBASE.dll not found
    SYMSRV:  http://msdl.microsoft.com/download/symbols/KERNELBASE.dll/2EF5F131266000/KERNELBASE.dll not found
    DBGHELP: D:\WinDbg\KERNELBASE.dll - file not found
    DBGHELP: D:\WinDbg\KERNELBASE.dll - file not found
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  http://msdl.microsoft.com/download/symbols/KERNELBASE.dll/2EF5F131266000/KERNELBASE.dll not found
    SYMSRV:  D:\WinDbg\sym\KERNELBASE.dll\2EF5F131266000\KERNELBASE.dll not found
    DBGHELP: D:\WinDbg\KERNELBASE.dll - file not found
    DBGHELP: D:\WinDbg\KERNELBASE.dll - file not found
    SYMSRV:  D:\WinDbg\sym\KERNELBASE.dll\2EF5F131266000\KERNELBASE.dll not found
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  D:\WinDbg\sym\KERNELBASE.dll\2EF5F131266000\KERNELBASE.dll not found
    SYMSRV:  http://msdl.microsoft.com/download/symbols/KERNELBASE.dll/2EF5F131266000/KERNELBASE.dll not found
    DBGHELP: D:\WinDbg\KERNELBASE.dll - file not found
    DBGHELP: D:\WinDbg\KERNELBASE.dll - file not found
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  http://msdl.microsoft.com/download/symbols/KERNELBASE.dll/2EF5F131266000/KERNELBASE.dll not found
    SYMSRV:  D:\WinDbg\sym\KERNELBASE.dll\2EF5F131266000\KERNELBASE.dll not found
    DBGENG:  C:\Windows\System32\KERNELBASE.dll image header does not match memory image header.
    DBGENG:  C:\Windows\System32\KERNELBASE.dll - Couldn't map image from disk.
    Unable to load image C:\Windows\System32\KERNELBASE.dll, Win32 error 0n2
    DBGENG:  KERNELBASE.dll - Partial symbol image load missing image info
    DBGHELP: Module is not fully loaded into memory.
    DBGHELP: Searching for symbols using debugger-provided data.
    SYMSRV:  D:\WinDbg\sym\kernelbase.pdb\C1C44EDD93E1B8BA671874B5C1490C2D1\kernelbase.pdb not found
    SYMSRV:  File: kernelbase.pdb
    
    SYMSRV:  Get File Path: /download/symbols/kernelbase.pdb/C1C44EDD93E1B8BA671874B5C1490C2D1/kernelbase.pdb
    
    SYMSRV:  Notifies the client application that a proxy has been detected.
    SYMSRV:  Connecting to the Server: http://msdl.microsoft.com/download/symbols.
    SYMSRV:  Successfully connected to the Server.
    SYMSRV:  Sending the information request to the server.
    SYMSRV:  Successfully sent the information request to the server.
    SYMSRV:  Waiting for the server to respond to a request.
    SYMSRV:  Successfully received a response from the server.
    SYMSRV:  Closing the connection to the Server.
    SYMSRV:  Successfully closed the connection to the Server.
    SYMSRV:  http://msdl.microsoft.com/download/symbols/kernelbase.pdb/C1C44EDD93E1B8BA671874B5C1490C2D1/kernelbase.pdb not found
    SYMSRV:  D:\WinDbg\sym\kernelbase.pdb\C1C44EDD93E1B8BA671874B5C1490C2D1\kernelbase.pdb not found
    DBGHELP: kernelbase.pdb - file not found
    *** WARNING: Unable to verify timestamp for KERNELBASE.dll
    *** ERROR: Module load completed but symbols could not be loaded for KERNELBASE.dll
    DBGHELP: KERNELBASE - no symbols loaded
    
    ************* Symbol Loading Error Summary **************
    Module name            Error
    KERNELBASE             PDB not found : cache*
                                    Unable to locate the .pdb file in this location
    
                           An extended error was returned from the WinHttp server : SRV*http://msdl.microsoft.com/download/symbols
                                    The .pdb file is probably no longer indexed in the symbol server share location.
                                    Please verify that you have access to the symbol server from your location.

    Taking the output ("file not found") at face value, the symbols are not available on the Microsoft symbol store.

    Can this be confirmed on the Microsoft side?

    I want to confirm it is NOT a proxy or connection issue. The internet proxy configuration has not changed in the past few days.

    • Moved by Baron Bi Wednesday, September 26, 2018 8:16 AM
    Wednesday, September 5, 2018 3:19 PM

All replies

  • Hi,

    thanks for posting here.

    This forum is about desktop application development issues. For your case which is more related to Windows symbols library, I suggest you post this issue to Microsoft on this forum below.

    https://developercommunity.visualstudio.com/spaces/8/index.html

    Your understanding and cooperation will be grateful.

    Best Regards,

    Baron Bi


    MSDN Community Support
    Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.

    Thursday, September 6, 2018 6:27 AM