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Tag Archives: Outlook
Will Power Automate emails crashes Outlook 2019?
[German]A blog reader contacted me with a crude observation. In his customer environment, there is a case with Office 2019 in which emails sent by Power Automate cause the recipient's Outlook client to crash. Is this an isolated case or … Continue reading
Phishing with appointment invitations targets Office 365 accounts
[German]I'm pick up on a topic that is somehow already known in this form. Owners of Microsoft Office 365 accounts receive appointment invitations that claim that an action needs to be carried out. But in the background is a phisher … Continue reading
Microsoft confirms and fixes the Outlook login error [4usqa], CAA2000B and 49dvs
[German]Microsoft is not having a good run with its Outlook Classic for Windows and Mac at the moment. The company has just had to confirm logon errors that are being reported with the error code [4usqa] (or CAA2000B and 49dvs).
Outlook fails with error [4usqa] since May 2025
[English]Redmond has probably deactivated its "Microsoft Information Protection API" in the tenants. As a result, Microsoft Outlook no longer works, but throws the error [4usqa]. Here is a brief overview of the situation.
Outlook: New requirements for bulk emails
[German]In future, Microsoft will specify new requirements for sending bulk emails in Outlook. For domains that send more than 5,000 emails per day, Outlook will soon require compliance with SPF, DKIM and DMARC. Non-compliant messages will initially be sent to … Continue reading
Why ISL Online: Critical factors when choosing a remote desktop solution
[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...
Outlook 2016: Calendar access blocked after April 2025 update KB5002700
[German]On April 8, 2025, Microsoft released the Office update KB5002700 to close a number of vulnerabilities in Microsoft Office 2016. After installing this update, access to the calendar is no longer possible. However, there is a quick workaround.
Outlook: Calendar remains empty
[German]Microsoft has already acknowledged a problem in its Outlook product at the end of March 2025, which means that the calendar no longer displays any entries.
Microsoft 365: Outlook Error [58tm1]
[German]Early February 2025 I came across a post in an administrator group on Facebook where an administrator is talking about the Outlook error "Something didn't work [58tm1]" in Microsoft 365. The error seems to occur frequently.
Outlook Classic error "msls70.dll not found" fixed
[German]In September 2024, Microsoft published a support article on the Outlook error reporting a missing msls70.dll and reported that it was investigating the problem. Microsoft now claims to have fixed this error.
Tool to fix broken 'umlauts' in Outlook signatures
[German]Some time ago, I addressed the problem that administrators of Microsoft 365 users are experiencing here on the blog. Sporadically, users' signatures in Outlook 365 break and umlauts are no longer displayed if these signatures are stored in the cloud. … Continue reading