To resolve the issue of the pack installer being offline in Keil µVision 5, try the following steps:
- Ensure you have an active internet connection.
- Check your firewall or antivirus settings to make sure they are not blocking Keil's access to the internet.
- Open Keil µVision and go to "File" > "Open Pack Installer".
- If the pack installer still shows as offline, try to refresh the pack list by clicking on the "Refresh" button within the Pack Installer.
- Check the Keil website for any updates or known issues with the pack installer.
- If the problem persists, consider reinstalling Keil µVision or contacting Keil/Arm support for further assistance.