Exchange 2013 server IIS worker process causing high CPU usage

We have an Exchange 2013 server (Windows 2012 R2) that is a Hyper-V VM. Occasionally IIS worker process (w3wp.exe) takes up 30% to 60% of CPU processes (total CPU usage stays at 100%) and causes email delay and Outlook disconnect. This used to happen when we were running Exchange database backup with a 3rd party software (CPU usage does not come down even after backup completes). Just now we installed an agent for a monitoring software and started auditing for software and hardware assets and CPU usage does not come down even after the audit is complete. We also see Desktop Window Manager taking up to 30% of CPU and adding to the slowness.

What causes Exchange server to behave this way and how can we prevent this?

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Satya PathakLead Technical ConsultantCommented:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.