Schema AD Prep For Exchange Server Not Moving

Good Day to you all,

This is a kind enquiry please.

Am in a processes of installing a Second Exchange Server in my Exchange Organization.

At the stage of Preparing the AD, While Extending Schema, It’s been at 6% for the whole day now as seen below in the Snip. What could be the Cause please?

If am to close, won’t it disrupt the Exchange Server Services on the production Server?

Please advise,

Thanks in advance,

Thanks and Regards,

Ronald.