Avast: practical troubleshooting checklist
A practical, independent guide for common problems. We are not affiliated with Avast.
1. Check the basics
R
e
s
t
a
r
t
t
h
e
d
e
v
i
c
e
,
c
o
n
f
i
r
m
i
n
t
e
r
n
e
t
a
c
c
e
s
s
,
i
n
s
t
a
l
l
p
e
n
d
i
n
g
o
p
e
r
a
t
i
n
g
-
s
y
s
t
e
m
a
n
d
a
n
t
i
v
i
r
u
s
u
p
d
a
t
e
s
,
a
n
d
m
a
k
e
s
u
r
e
a
u
t
o
m
a
t
i
c
d
a
t
e
/
t
i
m
e
i
s
e
n
a
b
l
e
d
.
2. Check the account
S
i
g
n
i
n
t
h
r
o
u
g
h
t
h
e
v
e
n
d
o
r
'
s
o
f
f
i
c
i
a
l
w
e
b
s
i
t
e
.
L
o
o
k
f
o
r
a
n
e
x
p
i
r
e
d
s
u
b
s
c
r
i
p
t
i
o
n
,
f
a
i
l
e
d
p
a
y
m
e
n
t
,
d
e
v
i
c
e
l
i
m
i
t
,
p
a
s
s
w
o
r
d
p
r
o
b
l
e
m
,
o
r
l
i
c
e
n
s
e
m
i
s
m
a
t
c
h
.
3. If the antivirus will not open
R
e
s
t
a
r
t
f
i
r
s
t
.
I
f
t
h
e
a
p
p
l
i
c
a
t
i
o
n
r
e
m
a
i
n
s
b
r
o
k
e
n
,
u
s
e
t
h
e
v
e
n
d
o
r
'
s
o
f
f
i
c
i
a
l
r
e
p
a
i
r
,
r
e
i
n
s
t
a
l
l
,
o
r
r
e
m
o
v
a
l
i
n
s
t
r
u
c
t
i
o
n
s
.
D
o
n
o
t
d
o
w
n
l
o
a
d
a
n
i
n
s
t
a
l
l
e
r
f
r
o
m
a
n
u
n
s
o
l
i
c
i
t
e
d
p
o
p
-
u
p
.
4. If you see a scary pop-up
D
o
n
o
t
c
a
l
l
a
p
h
o
n
e
n
u
m
b
e
r
d
i
s
p
l
a
y
e
d
i
n
a
r
a
n
d
o
m
b
r
o
w
s
e
r
p
o
p
-
u
p
.
C
l
o
s
e
t
h
e
p
a
g
e
,
r
u
n
a
s
c
a
n
f
r
o
m
t
h
e
i
n
s
t
a
l
l
e
d
s
e
c
u
r
i
t
y
p
r
o
d
u
c
t
,
a
n
d
u
s
e
t
h
e
v
e
n
d
o
r
'
s
o
f
f
i
c
i
a
l
w
e
b
s
i
t
e
f
o
r
s
u
p
p
o
r
t
.
5. Escalate safely
I
f
t
h
e
p
r
o
b
l
e
m
i
n
v
o
l
v
e
s
a
p
u
r
c
h
a
s
e
,
a
c
c
o
u
n
t
o
w
n
e
r
s
h
i
p
,
r
e
f
u
n
d
,
o
r
l
i
c
e
n
s
e
,
c
o
n
t
a
c
t
t
h
e
v
e
n
d
o
r
u
s
i
n
g
t
h
e
o
f
f
i
c
i
a
l
l
i
n
k
o
n
o
u
r
g
u
i
d
e
.
N
e
v
e
r
s
h
a
r
e
p
a
s
s
w
o
r
d
s
,
o
n
e
-
t
i
m
e
c
o
d
e
s
,
r
e
c
o
v
e
r
y
c
o
d
e
s
,
o
r
f
u
l
l
p
a
y
m
e
n
t
-
c
a
r
d
n
u
m
b
e
r
s
.
Need official support?
Use the official Avast support link on our main Avast guide. For account-specific actions, use the vendor's official website rather than an unsolicited phone number or pop-up.