Unexpected pdb error ok 0

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• When compiling a large C++ project with VS 2012 I periodically get this error:

  error LNK1318: Unexpected PDB error; FORMAT (11)

  The error goes away if I rebuild the non-linking projects again. What does this error mean? I could not find any documentation on the subject. Is it a bug in the linker or, perhaps, an indication of disk failure? It’s a brand new disk and I never saw any
  other indication of potential failure than this error.

  Please advise.

FROM microsoft/windowsservercore:latest

# install MSBuild & C++ build tools
RUN Invoke-WebRequest "http://go.microsoft.com/fwlink/?LinkId=691126" 
    -OutFile visualcppbuildtools_full.exe -UseBasicParsing ; 
    Start-Process -FilePath 'visualcppbuildtools_full.exe' -ArgumentList '/quiet', '/NoRestart' -Wait ; 
    Remove-Item .visualcppbuildtools_full.exe

# MSbuild path
RUN $env:PATH = 'C:Program Files (x86)MSBuild14.0Bin;'+$env:PATH; 
[Environment]::SetEnvironmentVariable('PATH', $env:PATH, [EnvironmentVariableTarget]::Machine);

Microsoft Windows [Version 10.0.14393]
Microsoft (R) Build Engine version 14.0.25420.1
Copyright (C) Microsoft Corporation. All rights reserved.

Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
Build started 6/11/2017 6:56:42 PM.
Project "C:j2v8VCppTestAppVCppTestApp.sln" on node 1 (Rebuild target(s)).
ValidateSolutionConfiguration:
  Building solution configuration "Release|x64".
Project "C:j2v8VCppTestAppVCppTestApp.sln" (1) is building "C:j2v8VCppTestAppVCppTestAppVCppTestApp.vcxproj" (2) on node 1 (Rebuild target(s)).
CoreClean:
  Creating directory "x64Release".
PrepareForBuild:
  Creating directory "C:j2v8VCppTestAppx64Release".
  Creating directory "x64ReleaseVCppTestApp.tlog".
InitializeBuildStatus:
  Creating "x64ReleaseVCppTestApp.tlogunsuccessfulbuild" because "AlwaysCreate" was specified.
ClCompile:
  C:Program Files (x86)Microsoft Visual Studio 14.0VCbinx86_amd64CL.exe /c /Zi /nologo /W3 /WX- /sdl /O2 /Oi /GL /D NDEBUG /D _CONSOLE /D _UNICODE /D UNICODE /Gm- /EHsc /MD /GS /Gy /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Yc"stdafx.h" /Fp"x64ReleaseVCppTestApp.pch" /Fo"x64Release\" /Fd"x64Releasevc140.pdb" /Gd /TP /errorReport:queue stdafx.cpp
  stdafx.cpp
  C:Program Files (x86)Microsoft Visual Studio 14.0VCbinx86_amd64CL.exe /c /Zi /nologo /W3 /WX- /sdl /O2 /Oi /GL /D NDEBUG /D _CONSOLE /D _UNICODE /D UNICODE /Gm- /EHsc /MD /GS /Gy /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Yu"stdafx.h" /Fp"x64ReleaseVCppTestApp.pch" /Fo"x64Release\" /Fd"x64Releasevc140.pdb" /Gd /TP /errorReport:queue VCppTestApp.cpp
  VCppTestApp.cpp
Link:
  C:Program Files (x86)Microsoft Visual Studio 14.0VCbinx86_amd64link.exe /ERRORREPORT:QUEUE /OUT:"C:j2v8VCppTestAppx64ReleaseVCppTestApp.exe" /INCREMENTAL:NO /NOLOGO kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /MANIFEST /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /manifest:embed /DEBUG /PDB:"C:j2v8VCppTestAppx64ReleaseVCppTestApp.pdb" /SUBSYSTEM:CONSOLE /OPT:REF /OPT:ICF /LTCG:incremental /TLBID:1 /DYNAMICBASE /NXCOMPAT /IMPLIB:"C:j2v8VCppTestAppx64ReleaseVCppTestApp.lib" /MACHINE:X64 x64Releasestdafx.obj
  x64ReleaseVCppTestApp.obj
  Generating code
  All 5 functions were compiled because no usable IPDB/IOBJ from previous compilation was found.
  Finished generating code
LINK : fatal error LNK1318: Unexpected PDB error; RPC (23) '(0x000006E7)' [C:j2v8VCppTestAppVCppTestAppVCppTestApp.vcxproj]
Done Building Project "C:j2v8VCppTestAppVCppTestAppVCppTestApp.vcxproj" (Rebuild target(s)) -- FAILED.
Done Building Project "C:j2v8VCppTestAppVCppTestApp.sln" (Rebuild target(s)) -- FAILED.

Build FAILED.

"C:j2v8VCppTestAppVCppTestApp.sln" (Rebuild target) (1) ->
"C:j2v8VCppTestAppVCppTestAppVCppTestApp.vcxproj" (Rebuild target) (2) ->
(Link target) ->
  LINK : fatal error LNK1318: Unexpected PDB error; RPC (23) '(0x000006E7)' [C:j2v8VCppTestAppVCppTestAppVCppTestApp.vcxproj]

    0 Warning(s)
    1 Error(s)

Time Elapsed 00:00:09.17

I’m trying to link against a library (libcef_wrapper_dll.lib) that was built with the /MDd flag. My application is build with /MDd and /CLR so should be compatible. The project compiles fine but when linking I get the very unhelpful error below:

   Error    1   fatal error LNK1318: Unexpected PDB error; OK (0) ''    c:ProjectsCefCefSharplibcef_dll_wrapper.lib 1   CefSharp

I don’t have a .PDB file for the .LIB, do I need one?

Turned out that I needed to delete all of the project temp files inc. caches etc., kill the debug symbol server and restart windows.

I’ve seen LNK1318: Unexpected PDB error; UNKNOWN (24) when linking.

It happened when I had more than two links of large outputs happening at once — mspdbsrc.exe used more and more memory, hit 2gig or so, then crashed.

This one worked for me:
Project properties -> C/C++ -> Code Generation -> Enable Function Level Linking -> Yes

Rebuilding the project solved the problem

Best solution for me has always been to simply kill the symbol server. I have a batch file on my desktop to do this:

@for /F "tokens=2 delims= " %%I in ('tasklist^|findstr /I "mspdbsrv.exe"') do taskkill /F /PID %%I>NUL && echo Process killed.

This is a technical limitation of the VC linker.
You should try split your code modules up more. Splitting up libraries also help with extremely long link times.

See if you can successfully build on release mode

I had the problem because I had a file with the /clr option that was messing things up. I moved the CLR specific code to a separate file, cleaned, rebuilt and the problem is gone.

This worked for me: Go to Project properties -> C/C++ -> Code Generation ->Runtime Library->Multi-threaded Debug (/MTd).

this looks to be some incredibuild issue.
refer: https://incredibuild.force.com/s/article/fatal-error-LNK1318-unexpected-PDB-error-OK-0

Fatal error LNK1318: Unexpected PDB error; OK (0)
Content

—> This error may occur in a random manner — usually when building large Solutions.

There are 2 ways solving your LNK1318 error:

1. Switching to the old PDB method - C7 (/Z7) since this error seems to invoke when the regular "PDB for Edit And Continue" option is enabled.
2. Switching to 64-bit native compiler. You can enable the 64bit native compiler using Agent Settings -> Visual Studio Builds -> Advanced. Under the "PDB File Allocation" please mark the "Force 64-bit toolset".

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