On June 4th, between 8:00 and 9:00 AM CEST (7.00 and 8.00 am UTC; 2.00 and 3.00 am EST), Proton will conduct scheduled maintenance to strengthen their infrastructure.

The duration is expected to be less than 1 minute and approximately 14% of Proton Drive users may be unable to upload files, while around 10% of Proton Mail users may experience a read-only mailbox. Proton VPN will be unavailable during this period.