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Change Key exchange fail

Modified on 2025-06-10 16:35:02 +0200

we are trying to generate our PRTG server DH key exchange from 1024 to 2048, but error appear after generating the key. Here is the error message

PS C:\Program Files (x86)\PRTG Network Monitor\cert> ..\openssl.exe dhparam -out dh.pem -2 2048; Restart-Service PRTGCoreService -Confirm
4324:error:02001015:system library:fopen:Is a directory:.\crypto\bio\bss_file.c:175:fopen('D:\projects\PRTG\libraries\openssl\openssl-1.0.2k\00_openssl_binaries_32/ssl/openssl.cnf','rb')
4324:error:2006D002:BIO routines:BIO_new_file:system lib:.\crypto\bio\bss_file.c:184:
4324:error:0E078002:configuration file routines:DEF_LOAD:system lib:.\crypto\conf\conf_def.c:197:

we are referring to this link https://helpdesk.paessler.com/en/support/solutions/articles/76000065150-how-can-i-generate-a-dh-key-that-is-longer-than-the-existing-default-key-in-prtg

Our current PRTG server version is 20.3.61.1649 x64

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The article you are mentioning applies to PRTG version 22 or newer. We recommend to update your PRTG first.

Jul, 2023 - Permalink

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Change Key exchange fail

Article CommentsAttention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.