Microsoft has fastened a difficulty inflicting some Microsoft 365 customers’ Outlook desktop purchasers to cease connecting to e mail servers by way of Change ActiveSync.
Change ActiveSync (EAS) is a synchronization protocol utilized by Microsoft Change to permit customers to entry their e mail, calendar, contacts, and duties.
EAS makes use of HTTP and XML to speak and synchronize information between the Change server and cell gadgets. By default, EAS is enabled on new consumer mailboxes, and disabling it will probably stop customers from synchronizing their mailboxes with cell gadgets.
“We now have to make use of Activesync so as to connect with our cloud-hosted e mail server. Different syncing is probably not impacted,” one consumer report said.
The identified situation solely impacts Outlook for Microsoft 365 customers who’ve up to date their purchasers to Model 2401 Construct 17231.20182.
Microsoft says the identified situation has been resolved in Model 2402 Construct 17328.20068 and better and asks clients to put in the replace by clicking “Replace Now” underneath File > Workplace Account > Replace Choices.
Earlier than resolving the problem, Redmond additionally provided a temporary fix for affected customers to revive their Outlook desktop purchasers, which required reverting Workplace M365 Click on-to-Run installations to an unaffected Workplace construct (the prompt construct is Model 2312 Construct 17126.20132) or switching to an Workplace Channel that did not have this sync situation.
“When you labored across the situation by reverting to the prior construct, re-enable updates by choosing File > Workplace Account > Replace Choices > Allow Updates,” the corporate stated right this moment.
Microsoft can also be presently investigating a difficulty that triggers security alerts in Outlook when trying to open .ICS calendar recordsdata after putting in December 2023 Patch Tuesday Workplace safety updates.
Final month, Microsoft fastened one other identified Outlook situation, which caused connection problems for desktop and mobile email clients utilizing Outlook.com accounts.
In December, Microsoft addressed two extra bugs: one triggered email-sending issues for customers with many folders, whereas the opposite caused Outlook to crash whereas sending emails from Outlook.com accounts.
