That happened to Lowe's website Friday morning. The home improvement retailer's site experienced a temporary outage.
Customers trying to shop Black Friday deals on the site took to Twitter to complain.
"@Lowes My cart was full and now the website is down!"
one Twitter user.
@Lowes My cart was full and now the website is down!— Phillip Miller (@philmilaustin) November 24, 2017
back: "We apologize our web site is down for maintenance. It will be available soon."
Phillip, We apologize our web site is down for maintenance. It will be available soon. If you need assistance with an order please call 800-445-6937 and any of our agents can help.— Lowe's (@Lowes) November 24, 2017
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Some customers trying to shop on Lowe's website saw a https://twitter.com/BlueTriangleTec/status/934073215328104448 that read: "The site is currently offline and will be available within the next hour."
"We are seeing increased customer traffic on Lowes.com to take advantage of our great deals this Black Friday. We have teams working diligently to restore Lowes.com to full functionality," Lowes told CNNMoney in a statement.
The website appeared to be back up and running as of 11 a.m. ET.
"When sites go down, it's quite disastrous," said Sucharita Mulpuru, a retail analyst at research firm Forrester.
"But it nonetheless happens every year, though is it less common than 10 years ago ... Retailers try their best to avoid problems like this but the unexpected can happen," she said.
In 2015, Target's website experienced outages on Cyber Monday. Last year, Macy's website crashed on Black Friday.