
Microsoft has fastened a identified difficulty that prevented Microsoft 365 prospects from opening encrypted emails in traditional Outlook after a December replace.
This bug impacts customers who attempt to open messages encrypted with “Encrypt Solely” permissions, a coverage that does not prohibit forwarding, printing, or copying the e-mail.
On impacted techniques, customers are seeing a message_v2.rpmsg attachment as a substitute of readable content material, which renders the encrypted message inaccessible.
“After updating to Present Channel Model 2511 (Construct 19426.20218) recipients might not be capable of open ‘Encrypt Solely’ emails,” Microsoft mentioned three weeks in the past when it acknowledged the problem.
“Within the Studying Pane it’s possible you’ll get a message ‘This message with restricted permission can’t be seen within the studying pane till you confirm your credentials. Open the merchandise to learn its contents and confirm your credentials’.”

In a Thursday replace to the unique assist doc, Microsoft says a repair is now out there for purchasers within the Beta Channel and can roll out to prospects within the Present Channel (Construct 19725.20000) and Present Channel Preview (Construct 19725.20000) in February.
Microsoft additionally gives two momentary workarounds for customers who cannot instantly improve to a set model of Outlook. One in every of them requires senders to make use of the Encrypt choice underneath the Choices ribbon (as detailed in this assist doc) as a substitute of the File dialog.
Alternatively, customers must revert to a software program construct that is not affected by this identified difficulty by closing all Workplace apps and working the next command from an elevated command immediate
"%programfilespercentCommon FilesMicrosoft SharedClickToRunofficec2rclient.exe" /replace consumer updatetoversion=16.0.19426.20186Final yr, Microsoft addressed a number of different points affecting traditional Outlook customers, together with bugs that broke electronic mail drag-and-drop performance after putting in Home windows 24H2 updates and prompted CPU spikes whereas typing messages.
Beforehand, the Outlook group fastened a bug that triggered traditional Outlook crashes when opening emails or beginning new messages and shared a short lived workaround for a identified difficulty that prompted Outlook errors when opening encrypted emails.
Extra just lately, it patched a significant bug that prevented Microsoft 365 customers from opening traditional Outlook on Home windows and launched emergency, out-of-band Home windows updates to repair traditional Outlook freezes.
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