zoom cpthost.exe is using exchcsp.dll from an unknown publisher

Forum|Forum|4 years ago
August 25, 2021
16 replies
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Everytime i join to a meeting I keep getting this error. "zoom cpthost.exe is using exchcsp.dll from an unknown publisher"

Can anyone Help?

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Prabhuext

Newcomer

We are getting the following message - cpthost.exe is using GSafecsp.dll from an unknown publisher zoom message and I can't share screens on zoom so think this is related. Any fixes?

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OttawaDeveloper

Newcomer

re gsafecsp.dll or if any other DLL is named in the same way, i would begin by tracking down what that DLL is and where it came from.

This one seems to relate to some product from GemAlto, some sort of security product. I suggest you look at that, perhaps remove that product if not needed, or even do the rename trick i did, but that said it may have effects on the gemalto product.

I did post this issue on the zoom support website also, since it sounds to me that zoom itself may be partly at fault, not sure if they will look at if there is an issue in zoom itself that causes these strange interactions.

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pdarnett

Newcomer

This is the fix from Zoom support, create the following registry key and it stops Zoom scanning third party DLL's. Tested and works fine for us.

	HKEY_LOCAL_MACHINE
Key path	SOFTWARE\Policies\Zoom\Zoom Meetings\General
Value name	Disable3rdModuleVerify
Value type	REG_DWORD
Value data	0x1 (1)

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OttawaDeveloper

Newcomer

That is excellent, never would have guessed that one! The fix from pdarnett of Feb 2, 2022 works for me and i was able to rename the old word DLL to its original name. Share screen works and no popup!

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rowanavita44

Newcomer

I'm having the same issue also with the CPT. message. It even affected Screen Sharing. This is so frustrating. It started occurring when I did the latest Zoom update. GRRRRR!!!!!!

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pdarnett

Newcomer

Did you try this?

This is the fix from Zoom support, create the following registry key and it stops Zoom scanning third party DLL's. Tested and works fine for us.

	HKEY_LOCAL_MACHINE
Key path	SOFTWARE\Policies\Zoom\Zoom Meetings\General
Value name	Disable3rdModuleVerify
Value type	REG_DWORD
Value data	0x1 (1)

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Alcrisp

Newcomer

Thanks for sharing your fix! This error just started showing up for me with the last Zoom update, so Zoom needs to figure it out on their end. What I've always heard is that you aren't supposed to mess with the registry if you don't know what you are doing. Seems like it is an ongoing problem and users shouldn't need to find a work around. 😛

Meanwhile, I am wondering if you can provide more information/detailed steps for those of us who aren't tech people? I don't know what I am supposed to do with that information. Thanks!