The PGP Whole Disk Encryption process pauses and doesn't resume from the PGP Desktop interface.
There could be several other reasons to pause the encryption but most commonly seen cause is default power policy in all laptops. This policy setting controls laptop hibernate and standby modes in inactivity condition which leads to interruption of disk encryption process. Always make sure to set power policy to never before starting the encryption/decryption process.
If the encryption process doesn't resume from the PGP desktop interface.Try the following steps:-