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

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    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

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    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