All XP devices have been upgraded to Windows 7, so the old XP patches must be deleted from the master.

Devices running Windows 10 are up to date with patches released before March 2018, so those old patches can be removed.

There are basically three ways to address this, although the last one is not recommended and should only be used as an emergency workaround:

A- BCM >= 12.6
Starting from 12.6 a new option has been added to the Global Settings > System Variables:



If enabled, this option will have all the patches that are not members of any patch job or patch group deleted at the start of the agent's service on the master.

Note:

This will interfere with dynamic downloads. Do not enable it if dynamic downloads need to be retained, even though the dynamic downloader functionality has been mostly deprecated by patch jobs. 

Note: This system variable setting will not proceed to delete any patch if a patch repository has been set.


B- BCM <= 12.5
For versions older than 12.6 patches could only be cleaned up manually.

1. Delete old patches from a patch group:
The simplest and least harmful way to proceed is to:

2. Delete them from the master's install folder:

This method should only be used as an emergency workaround; the methods outlined above should be prioritized over this approach.

1. Stop the service on the master.
2. Delete the unwanted patches directly from ../master/data/vision64database/patches. (If everything works correctly, they will be redownloaded if a device requests them in the future.)
3. Restart the service.

NOTE:
- There are other ways of gaining space on master and relays; see the KA 000124834.