Operating System definitions beginning with V

A certificate that represents the public-key portion of a token-signing certificate. A verification certificate is stored in the trust policy and used by the federation server in one organization to verify that incoming security tokens have been issued by valid federation servers in the organization's farm and in other organizations.
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Browse Related Terms: Certificate, Certificate Services, client authentication certificate, exemption certificate, health certificate, server authentication certificate, token-signing certificate

A feature that allows standard users to run applications that normally write to per-computer files and registry keys. If these write operations fail, they are automatically redirected to equivalent per-user locations.
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Browse Related Terms: app compat, AppCompat database, application compatibility, application compatibility database, file/registry virtualization

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An area of storage on a hard disk. A volume is formatted by using a file system, such as NTFS, and has a drive letter assigned to it. A single hard disk can have multiple volumes. Some volumes can span multiple hard disks.
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Browse Related Terms: active partition, active volume, EFI, extended partition, Extensible Firmware Interface, logical drive, partition table, primary partition

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