topic Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash in Network Access Control

ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

csco11552159 — Mon, 19 Feb 2018 16:14:32 GMT

I try to test 2.2 patch 6 in my lab, but I keep getting : " Error generating md5/sha256 crypto hash"

What's the problem? How can I fix?

thank you.

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

hslai — Mon, 19 Feb 2018 16:27:42 GMT

Try installing the patch via ISE admin CLI.

What is the system spec of the primary ISE node? VM? The number of CPU cores and RAM allocated?

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

csco11552159 — Mon, 19 Feb 2018 16:44:36 GMT

let me try with CLI.

It is 3595 SNS server dedicated for PAN in lab.

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

gbekmezi-DD — Mon, 19 Feb 2018 16:46:17 GMT

Did you verify the MD5 hash of the patch file after downloading it?

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

csco11552159 — Mon, 19 Feb 2018 17:10:36 GMT

yes, I did check MD5 checksum. They are match .

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

hslai — Mon, 19 Feb 2018 18:31:41 GMT

Please check ade/ADE.log file and see whether it indicated any anomaly around the time of the error. Engage Cisco TAC if possible.

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

Nidhi — Tue, 20 Feb 2018 10:20:04 GMT

File corruption can happen even with transfer from your server to ISE. Please check the checksum on ISE.

and as Hsing mentioned, good idea to engage TAC here.

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

jvujcich — Thu, 24 Feb 2022 23:11:55 GMT

Hey all, I see this has been resolved but i don't see the answer here.

What was done by TAC to resolve this issue?

I had the same error last night after pushing the "install" button.

I was trying to do a GUI upgrade from ISE2.6 - 6 to ISE 2.6 -10.

MD5 checked out.

I don't think the file quite loaded into ISE.

I got around this by using the CLI method.

At first I thought is was a Firewall Issue (CLI uses FTP and GUI uses https:) but My FTP server and ISE node are on the same subnet - so can't be that.

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

Marcelo Morais — Fri, 25 Feb 2022 00:44:11 GMT

Hi @jvujcich ,

since the same file was successfully used for the patch install via CLI ... worth the shot to try a different browser.

Hope this helps !!!

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

jvujcich — Fri, 25 Feb 2022 01:35:55 GMT

Oh yeah, Wish I'd thought of that last night! Anyway, will try that next time.

Thanks.

Re: ISE 2.2 Patch 6: Error generating md5/sha256 crypto hash

Amen — Fri, 03 Jun 2022 07:05:49 GMT

I just wanted to say that I had the same issue, the same error I saw but the patch was installed, it showed me the error but still, ISE accepted the patch. any explanation?