Getting _com_error exception for in VS2017

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I am getting c++ exception at

IProgressDialogPtr prgBar=IProgressDialogPtr(__uuidof(SiProgressDialog));

Unhandled exception at 0x773049F2 in iTool.exe: Microsoft C++ exception: _com_error at memory location 0x001BE430.

Please guide me how to resolved it.

This program was working fine in VS2017... i had installed VS2019 community edition.. i don't know after that it stopped working.

What I have tried:

doing research and Debugging the code.

Posted 21-Jul-20 20:47pm

Member 13261094

Updated 21-Jul-20 21:13pm

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Shao Voon Wong 22-Jul-20 3:01am

Have you built and register IProgressDialogPtr's COM dll on the computer which has VS2019?

To register your COM dll,

regsvr32.exe your.dll

To unregister your COM dll,

regsvr32.exe /u your.dll

https://support.microsoft.com/en-us/help/249873/how-to-use-the-regsvr32-tool-and-troubleshoot-regsvr32-error-messages

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Member 13261094 · Answer 1 · 2020-07-21T21:13:00

Solution 1

thank you Shao...issue has resolved now.

Posted 21-Jul-20 21:13pm

Member 13261094