#office365

Every organization depends on Microsoft 365 for emails, contacts, calendars, OneDrive files, and SharePoint data. But accidental deletion, ransomware attacks, retention policy changes, or employee offboarding can put your critical business information at risk.

Shefware Microsoft 365 Backup Tool provides a secure and reliable way to protect your Office 365 environment with enterprise-grade backup capabilities.

Why Choose Shefware?

✔ Backup Exchange Online mailboxes, OneDrive, and SharePoint data ✔ Export data to PST, PDF, EML, MSG, CSV, MBOX, and more ✔ Backup multiple Microsoft 365 accounts simultaneously ✔ Advanced filters for selective mailbox backup ✔ Schedule automatic backups ✔ Preserve folder hierarchy, metadata, and attachments ✔ Secure authentication with encrypted backup technology ✔ Real-time backup progress monitoring

Whether you're a small business, enterprise, or managed service provider, Shefware helps safeguard your Microsoft 365 data while making backup and recovery simple.

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Can External Guests Access Restricted SharePoint Online Subfolders?

Yes. Sharing a parent folder with an external guest can sometimes allow access to subfolders, even when those subfolders have unique permissions.

Best practice: • Remove external sharing from the parent folder • Review active sharing links • Keep restricted folders on unique permissions • Share only the specific folders the guest needs • Use Specific people links • Verify access with Manage access and Check permissions

Tip: For frequent external sharing, consider using a separate document library for guest-facing content.

📖 Read the full guide:

If you're seeing -1 for NumberOfVoiceUsers or NumberOfTelephoneNumbers when using Get-CsOnlineLisCivicAddress or Get-CsOnlineLisLocation, you're not alone.

I recently explored why this happens in Microsoft Teams PowerShell and shared a practical workaround that accurately identifies unused Emergency Addresses by correlating CivicAddressId with phone number assignments. The guide also covers the hidden 500-result limitation in Get-CsPhoneNumberAssignment and how to handle it using pagination.

A useful resource for Microsoft Teams administrators looking to clean up unused LIS locations and improve E911 management.