Greetings from beautiful Las Vegas, where the days are sunny and every
night is Saturday! I came out here for the Dev Connections conference at the
Mandalay Bay, which winds up today. Whenever I travel I make sure to
synchronize all my data to my laptop so I’ll have the resources I need when I’m
away from home. This time a snag I’ve been having with bookmark synchronization
in Chrome finally came to a boil and I thought I’d share how I addressed the

If you’ve read my columns for a while you might have noticed that synchronization
duplicates have been the bane of my existence. I’ve experienced duplicate contact
problems in Outlook 2011
as well as duplicate data
issues in Google Drive
– it’s never pretty cleaning up these issues but
hopefully the advice in this article can be helpful if you find yourself
running afoul of a duplicate Google Chrome synchronization problem. Note this
might help with bookmarks, extensions, history or anything else you’re having
problems with.

article is also available as a TechRepublic Screenshot Gallery.

The background of the problem

As a background, I use multiple systems (two desktops at work and home
as well as two laptops) and had an add-on called “Xmarks” set up to synchronize my bookmarks
(which number about 450 total) among Firefox and Chrome using the respective
add-ons for each.

I had the Google Chrome bookmark sync turned off at this point (I’ll
explain where to turn this on or off below) so as to not make things too
confusing; the goal was to let Xmarks handle synchronization on its own.

I found Xmarks worked fine with just Firefox in the recipe, but unfortunately
once I added Chrome into the mix I found a seemingly never-ending parade of
duplicate bookmarks piling up on all my systems. Figure A shows what I would
generally see every time the problem exploded.

Figure A

Each time I deleted all my bookmarks and restored them from backup. Then
there would be a next time.

At first I thought Xmarks was to blame, since the duplicate bookmarks
also showed when I logged directly into my Xmarks account, and even deleting
them there didn’t seem to do anything. I removed Xmarks from my browsers and
switched Google Chrome bookmark sync on by accessing chrome://settings in the browser, clicking the “Advanced sync
settings” button and checking off “Bookmarks.” (Figure B)

Figure B

Unfortunately, this didn’t work either – I kept encountering duplicate
bookmarks, and what was odd was seeing deleted bookmarks – which had been gone
from all my computers – mysteriously reappear like a scene from “The Sixth

I cleaned out the duplicates, exported my known good set of bookmarks to
an html file and turned off Google Chrome bookmark sync. However, this meant I
had to export my bookmarks every time I made a change and reimport them on all
my systems. I put up with this for a bit since I had other priorities to wade
through. Finally just before leaving on my trip I thought: “This is
ridiculous. Technology is supposed to solve problems, not create them.” I
knew I’d be adding a lot of links at the conference and wanted one less chore
on my to-do list, so I began digging into the issue to see what I could do.

Looking for the fix

Based on some quick research, I checked my Chrome Sync settings to see
what sort of data was being synchronized from Google’s servers among my various
computers. You can do the same at Here’s what I saw. (Figure

Figure C

Everything looked normal to
me – except the “Open Tabs” and “Bookmarks” fields – Google
thought I had seventeen times as many bookmarks as I really possessed, even
after multiple deletions and manual imports on all my computers. I knew I had
nowhere near that level of open tabs, being conservative about the ones I use.

Clearly it was time to
flush everything out and start over. I did this by clicking the “Stop and
Clear” button in the lower left, which invoked the prompt shown in Figure

Figure D

I clicked OK. Then to be on
the safe side I waited several hours as the box indicated. When I returned to
the Google Chrome Sync
page I observed Figure E.

Figure E

I signed into Chrome which
brought me to the Advanced Sync settings dialog. (Figure F)

Figure F

Once I clicked OK, I
checked out the Google Chrome Sync settings page once more and beheld the following. (Figure G)

Figure G

This seemed like a good
sign; synchronization had started according to that count of “2” in
the “Bookmarks” field. I waited a couple of days and checked my
various computers, testing the process by adding new bookmarks and removing
obsolete ones. Everything seemed to work successfully and my Chrome Sync
settings currently show the appropriate figures (I have added over 60 bookmarks
since the problem appeared resolved). (Figure H)

Figure H

Wow, I guess luck really is
with me in Vegas! Maybe it’s time to visit the roulette table.

What else can I try if this doesn’t

If the above steps don’t
help you, you might also try forcing synchronization in Chrome.

Go to chrome://settings.
(Figure I)

Figure I

Click “Disconnect your
Google account” (if this option is greyed out it may be due to the fact
the setting is enforced by your administrator, with whom you should discuss
this problem); a yellow diamond with what appears to be a black necktie in the
middle of it will be shown next to the button. (Figure J)

Figure J

Assuming you can click “Disconnect
your Google Account” you’ll see the confirmation box shown in Figure K.

Figure K

Click “Disconnect
account.” The Chrome settings page will appear as follows. (Figure L)

Figure L

Wait a bit to ensure the
changes take effect then restart Chrome.

Access chrome://settings
again, then click “Sign in to Chrome” to connect your account once

You’ll be prompted to
choose what to sync. (Figure M)

Figure M

Leave the defaults (unless
there is a category which you do NOT want to sync) and click “OK.”

Repeat this process for
every system on which you are signed into Chrome. Hopefully everything will
begin evening out among your bookmarks and/or data.

Android users

I also found a good tip for Android users in the Google Chrome forums
describing an issue with
Android phones causing duplicate bookmarks
. The poster, JL King, stated:

“The Android browser (called “Internet” on Samsung
phones) has been known to cause duplicates. I recommend the following:

Access Android Settings | [accounts] | Google | select your account name

Scroll down and uncheck “Sync Internet”

This should prevent new duplicates. Then you’ll need to clean up the
existing duplicates, which might be easier from a desktop:

Open Chrome from a computer on which you’re signed into that same

Type chrome://bookmarks into the Omnibox

Find your Mobile Bookmarks folder in the left nav.

Select the duplicates and delete.

As an alternative to the last four steps, there are several bookmark
management extensions in the Chrome Web Store that will automatically find and
delete duplicates.”

I got curious about the extensions mentioned in the post above and found
an add-on for Chrome called Bookmark Sentry. I installed it
in Chrome then accessed chrome://extensions to configure it.
(Figure N)

Figure N

I clicked “Options” underneath “Bookmark Sentry
(scanner). (Figure O)

Figure O

The extension is ad-supported, but you can turn the ad option off
(albeit by checking a box that states “I don’t want to support you,”
which seems to be a bit of a tearjerker).

You can set the scanning frequency and the options (check for duplicates
/ check for bad links / check for duplicates and bad links). I left the default
of “Check for bad links & duplicates” and ran it. The add-on showed
me some bad links but no duplicates (it does not actually appear to say “No
duplicates found!” but I tested it by adding a duplicate of my “Deploy
Google apps” bookmark and reran the scan). (Figure P)

Figure P

There doesn’t seem to be a way to prevent duplicates from occurring on a
proactive basis, but this add-on can be quite helpful if you’re experiencing
hassles of this nature and need to comb through various bookmark folders and
eliminate any extras.

Other resources

Google offers a page discussing
the synchronization setup process which is worth reviewing
. They also have a
support page on troubleshooting
synchronization issues
. Finally, there is also a Google Chrome
forum where problems can be reported and discussed