Security

WannaCry/WannaCrypt and other Ransomware

This past week has seen the widespread growth of the WannaCry ransomware attack, which was based on the EternalBlue SMB vulnerability.  We released security update MS17-010 on March 14, 2017 to address the vulnerability.

Preliminary reports show at least 300,000 computers have been affected globally by this ransomware that encrypts files, requiring up to $600 in bitcoin payments within 7 days before the data is deleted.… [ Continue reading ]

Migrating

Migrating Hybrid Public Folders to Office 365

Update: Shameless plug: I’ve written more extensively about public folder migrations from both the 2007/2010 and 2013/2016 perspectives in the book, “Office 365 Administration: Inside Out,” available at http://aka.ms/thebookonit.

So, tonight I started the last phase of one of my longest-running projects since joining Microsoft–an Exchange Online migration for a school district that I began nearly a year and a half ago. … [ Continue reading ]

Migrating

Troubleshooting Mailbox Migration Error “You can’t use the domain because it’s not an accepted domain for your organization.”

While migrating users via MRS between organizations (especially to Exchange Online), a pretty common error that I run across is:

You can’t use the domain because it’s not an accepted domain for your organization.

This error is generated because the MailUser object of the user you’re attempting to migrate has a proxy address attached to it that is NOT an accepted domain in your target organization or tenant.… [ Continue reading ]

Configuration

Export and Import Calendar Processing Information

During my current project, it became necessary to capture additional calendar processing parameters that are not preserved during a normal hybrid move–such as booking policies.

Some of the challenges that I faced with this tool:

  • Blank or unpopulated attributes
  • Conversion of sAMAccountName values to PrimarySmtpAddress
  • Multiline attributes with special characters
  • Attributes that were set for the wrong recipient type

So, the first thoughts I have when building a tool generally involve four concepts: what data do I need to gather/export, what format is the source data, what format do I need to save it in, and how do restore/import that data back into the target?… [ Continue reading ]