http://www.microsoft.com/downloads/details.aspx?FamilyID=8c2e44a5-6a28-4888-93a7-6a6c6a87be7f&DisplayLang=en

This is a reliability update for Windows XP machines. Install this audio component update to prevent memory corruption issues which may cause an unstable state on a computer that is running Windows XP Service Pack 2.

Date Published: 8/17/2006

Not the same , but also for audio , didnt know where else to put this

I'll implement as soon as RyanVM confirms it's good to go. He's the Updates Master, so his word will make or break it.

The PORTCLS.SYS update (KB921401) has now been implemented in the RyanVM Update Pack.

http://www.ryanvm.net/msfn/changelog.html

The hotfix doesn't fix only the midi software but also other hotfixes.
This is a cumulative hotfix. All previous hotfixes concerning portcls.sys are also supported by this hotfix.

So it is wrong to say that 0.01% of the people are helped by this hotfix.

I am using this hotfix. No problem so far.

Of course it's cumulative... that's always.

I'll implement as soon as RyanVM confirms it's good to go. He's the Updates Master, so his word will make or break it.

So it is wrong to say that 0.01% of the people are helped by this hotfix.

I am using this hotfix. No problem so far.

This hotfix is not critical/recommended either, so you won't get it through Windows Update, which again says how rarely this hotfix is needed!

It's a request only hotfix so it would need a serious amount of testing.  The request only hotfixes with driver updates have given me a crapload of troubles.

Hmm... then I will not use it - unless Ryan can tell me it's safe.

http://support.microsoft.com/kb/921401/en-us

Portcls.sys has been replaced by a newer hotfix build 5.1.2600.2950

ftp://81.209.195.50/tmp/KB921401/Window … 01-x86.rar

The zipped file contains the dutch and english hotfix.

You can replace the old KB913425 in your Driverpacks Base with the new one (KB921401).

Thanx