Disallowed file accesses

I have an msbuild project that is getting an error when creating a pdb file. How can I fix this? Thanks.

PS D:\Test\Code\src\oss\NtRegistrySupport> bxl /c:config.bc
Microsoft (R) Build Accelerator. Build: 0.1.0-devBuild, Version: [Developer Build]
Copyright (C) Microsoft Corporation. All rights reserved.

[0:04] error DX0064: [Pip07F4EBC59ED32C49, MSBuild.exe (NtRegistrySupport_VS2019 - D:\Test\Code\src\oss\NtRegistrySupport\NtRegistrySupport_VS2019.vcxproj), NtRegistrySupport_VS2019, NtRegistrySupport_VS2019.vcxproj, {}, D:\Test\Code\src\oss\NtRegistrySupport\NtRegistrySupport_VS2019.vcxproj, D:\Test\Code\src\oss\NtRegistrySupport] - failed with exit code 1
NtRegistrySupport.cpp
D:\Test\Code\src\oss\NtRegistrySupport.cpp : fatal error C1041: cannot open program database 'v:\code\win32\Debug\pdb\NtRegistrySupport_d.pdb'; if multiple CL.EXE write to the same .PDB file, please use /FS [D:\Test\Code\src\oss\NtRegistrySupport\NtRegistrySupport_VS2019.vcxproj]
[0:04] error DX0500: [Pip07F4EBC59ED32C49, MSBuild.exe (NtRegistrySupport_VS2019 - D:\Test\Code\src\oss\NtRegistrySupport\NtRegistrySupport_VS2019.vcxproj), NtRegistrySupport_VS2019, NtRegistrySupport_VS2019.vcxproj, {}] - Disallowed file accesses were detected (R = read, W = write):
Disallowed file accesses performed by: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.28.29333\bin\HostX86\x86\CL.exe
W v:\code\win32\Debug\pdb\NtRegistrySupport_d.pdb

W = Write
[0:04] 100.00% Processes:[1 done (0 hit), 0 succeeded, 1 failed, 0 skipped, 0 executing, 0 waiting]
[0:04] -- Cache savings: 0.00% of 1 included processes. 0 excluded via filtering.
Build FAILED
Log Directory: D:\Test\Code\src\oss\NtRegistrySupport\Out\Logs

Start by reproducing the build with config.bc and inspect the log in Out\Logs. The reported failure comes from MSBuild.exe invoking CL.exe for NtRegistrySupport_VS2019.vcxproj, which writes v:\code\win32\Debug\pdb\NtRegistrySupport_d.pdb. Done means determining why that PDB access is disallowed and achieving a successful build without DX0064 or DX0500.