Pop Up Why?

Apparently there was an update to Avast AV and I rebooted the system as requested.
10 Min. maybe less after the system restart this popped up.

https://screencast-o-matic.com/screenshots/u/Lh/1585312489756-61060.png

I’m in the middle of working on other things on my computer.
Why did this just start up on it’s own?

Hello Bob
Thanks for your post. A very strange window, it certainly should not appear.
It looks like an issue.
We need to investigate this.
Could you please provide Diagnostic Information from your browser?

Was it happens only ones?

executable_path=C:\Program Files (x86)\AVAST Software\Browser\Application\AvastBrowser.exe
profile_path=C:\Users\bob3160\AppData\Local\AVAST Software\Browser\User Data\Profile 1
os_version=Windows 10 v1909 (x64)
av_version=20.2.2401
host_prefix=beta-
browser_version=80.0.3765.150 (Official Build (beta)(64-bit))
cgid=100
cid=9998
uid=c9918140ae584bebb517d54f6af1e6a8

Enabled extensions:
ahfgeienlihckogmohjhadlkjgocpleb : Web Store : 0.2
dmfdacibleoapmpfdgonigdfinmekhgp : Avast SecureLine VPN : 1.5.1.839
emhginjpijfggbofeediiojmdlmlkoik : Avast Passwords : 2.0.4569
kdhipfbocahipinepiahppeionfbahlg : Avast Video Downloader : 2.0.48
khoabckdcnciingnnklkfgdhnniefnod : Avast HTTPS Encryption : 19.6.4.114
kmediagceboldddnnajkcochbkfkedel : Avast Anti-Tracking : 1.18.16.597
kmendfapggjehodndflmmgagdbamhnfd : CryptoTokenExtension : 0.9.74
lhnnoklckomcfdlknmjaenoodlpfdclc : Avast Bank Mode : 1.2.0.134
mecokbmnofclapimmlnfegiohceoaocc : Avast Performance Manager : 1.2.220
mfehgcgbbipciphmccgaenjidiccnmng : Cloud Print : 0.1
mhjfbmdgcfjbbpaeojofohoefgiehjai : Chromium PDF Viewer : 1
ooeobdingfeedklanlfcjhffgennflke : Avast Adblock : 1.18.16.597
pkedcjkdefgpdelpbcmbmeomcjbeemfm : Chrome Media Router : 8220.313.1.1

Disabled extensions:
beghmmhchncjignfbfnemngnlnjdmbcb : Avast Anti-Fingerprint : 2.2.112
daanglpcpkjjlkhcbladppjphglbigam : Avast Online Security : 20.1.480
nmebbcjdbhgggcgohlnlgadkmjiedfbc : Avast Hack Check : 1.2.174

Today it started up normally. I’ve also needed to import my favorites from a saved file.
Since doing that, it’s now starting up properly.