Very Large folder - All UsersApplication DataMicrosoftCryp..

Hi there,

I am running a number of windows 2003 sp1 web servers. I'm not sure if
this is related to IIS but a few people think it is and asked me to
post on here. I am running low on disk space on the system disc on one
of them. Down to about 195 mb today from 250mb yesterday.

After exploring the different folders i have come across a rather large
folder that is 1 gb in size and contains over 300,000 files. The
folder is here:

C:\Documents and Settings\All Users\Application
Data\Microsoft\Crypto\rsa\machine keys

Does anyone know what this folder contains or why it is so big. On
another similar server the same folder is only 116k and contains 29
files.

I am running IIS with a large number of sites and some of them have SSL
certificates attached to them. I have recently added two new
certificates to
the server in the past few days and i think this is why is has dropped
a bit
in the past few days.

As i am drastically running out of room. I have tried to compress this
folder but it didnt compress at all. I have resorted to reducing th
size of the page file on the C drive in order to stop us running out of
disk space.

The machine is in a domain and the I have been getting a couple errors
saying could not read group policy. This this may have been down to
the time being 10+ minutes out of sync with the domain controller. I
have manually changed the time and these errors no appear to have
stopped appearing. resolved them self.

I have just checked the C drives for virus and nothing has been
detected.

Just a few questions:
- What is this folder?
- Why is it so big when the same folder on another similar server is
200k?
- How can i reduce the size of this folder?

Any help much appreciated

Cheers