Comet said it is "urgently working" on plans to secure the company's future and it is expected that administrators will seek a buyer for the business.
Customers with outstanding orders and those with gift cards and vouchers are being told it is "business as usual until further notice" and that the group intends to fulfil deliveries of products that have been paid for.
Comet's customer care team is handling any customer inquiries on 0844 8009595.
The large distribution hub in Harlow in Essex has become the biggest Comet site so far to close, with 172 people losing jobs.
Around 6,500 retail jobs are under threat as electricals chain Comet became the latest casualty on the high street.