| Solution |
Examine the output of 'diagnose sys top', which will show the 'wpad_ac' process consuming high CPU:
Run Time: 181 days, 4 hours and 36 minutes
11U, 0N, 1S, 88I, 0WA, 0HI, 0SI, 0ST; 15918T, 8105F
wpad_ac 9882 R 99.6 0.0 1 <-----
cu_acd 20927 S 6.2 0.2 4
ipsengine 18106 S < 5.8 1.3 11
fltund 281 S 2.3 0.1 10
This is a known issue reported in bug ID 983526, and it has been resolved in FortiOS versions 7.4.4 and above.
As a workaround, restart the 'wpad_ac' process using the following command:
fnsysctl killall wpad_ac
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