Dear All,
I had isync running flawlessly for a few years with OAUTH2. Recently, it
seems like my organization must have done an “upgrade” to Office365.
And now, everything is broken on my end.
Specifically, each sync end as so:
```
ldm@pildm:~ $ mbsync -aV
Reading configuration file /home/ldm/.mbsyncrc
Channel work-inbox
Opening far side store work-remote...
Resolving outlook.office365.com...
Opening near side store work-local...
Connecting to outlook.office365.com (52.96.97.162:993)...
Connection is now encrypted
Logging in...
Authenticating with SASL mechanism XOAUTH2...
Opening far side box INBOX...
Opening near side box INBOX...
Loading far side box...
Loading near side box...
near side: 0 messages, 0 recent
far side: 1971 messages, 0 recent
Error: channel work-inbox, near side box INBOX: Unable to recover from
UIDVALIDITY change.
Processed 1 box(es) in 1 channel(s),
pulled 0 new message(s) and 0 flag update(s),
expunged 0 message(s) from near side,
pushed 0 new message(s) and 0 flag update(s),
expunged 0 message(s) from far side.
```
As you can see, it’s not an authentication issue but an UIDVALIDITY
issue. I looked on the web and tried pretty much every single thing I
found, including deleting my local copy in its entirety:
```
rm -rf ~/Mail
```
And let it redownload everything. The `.uidvalidity` file(s) are held
within the `~/Mail`
and rerunning the command above after atomizing the folder yields this
content
```
ldm@pildm:~ $ cd Mail/
ldm@pildm:~/Mail $ tree
.
└── work
└── In
├── cur
├── new
└── tmp
6 directories, 0 files
ldm@pildm:~/Mail $ ls -al
total 12
drwx------ 3 ldm ldm 4096 Aug 14 14:44 .
drwxr-xr-x 57 ldm users 4096 Aug 14 14:44 ..
drwx------ 3 ldm ldm 4096 Aug 14 14:44 work
ldm@pildm:~/Mail $ ls -alR
.:
total 12
drwx------ 3 ldm ldm 4096 Aug 14 14:44 .
drwxr-xr-x 57 ldm users 4096 Aug 14 14:44 ..
drwx------ 3 ldm ldm 4096 Aug 14 14:44 work
./work:
total 12
drwx------ 3 ldm ldm 4096 Aug 14 14:44 .
drwx------ 3 ldm ldm 4096 Aug 14 14:44 ..
drwx------ 5 ldm ldm 4096 Aug 14 14:44 In
./work/In:
total 24
drwx------ 5 ldm ldm 4096 Aug 14 14:44 .
drwx------ 3 ldm ldm 4096 Aug 14 14:44 ..
drwx------ 2 ldm ldm 4096 Aug 14 14:44 cur
drwx------ 2 ldm ldm 4096 Aug 14 14:44 new
drwx------ 2 ldm ldm 4096 Aug 14 14:44 tmp
-rw------- 1 ldm ldm 13 Aug 14 14:44 .uidvalidity
./work/In/cur:
total 8
drwx------ 2 ldm ldm 4096 Aug 14 14:44 .
drwx------ 5 ldm ldm 4096 Aug 14 14:44 ..
./work/In/new:
total 8
drwx------ 2 ldm ldm 4096 Aug 14 14:44 .
drwx------ 5 ldm ldm 4096 Aug 14 14:44 ..
./work/In/tmp:
total 8
drwx------ 2 ldm ldm 4096 Aug 14 14:44 .
drwx------ 5 ldm ldm 4096 Aug 14 14:44 ..
```
I even have renamed my inbox from INBOX to “In” in fear that a
hidden file was lurking somewhere. But no dice.
running
```
mbsync -aVD
```
produces a huge output. Only showing the very end below
```
uid=1051965 flags=S size=0 tuid=?
uid=1052014 flags=S size=0 tuid=?
uid=1052020 flags=S size=0 tuid=?
uid=1052026 flags=S size=0 tuid=?
uid=1052032 flags=RS size=0 tuid=?
uid=1052050 flags=RS size=0 tuid=?
uid=1052062 flags=S size=0 tuid=?
uid=1052073 flags=S size=0 tuid=?
uid=1052079 flags=S size=0 tuid=?
uid=1052085 flags=S size=0 tuid=?
uid=1052099 flags=S size=0 tuid=?
uid=1052104 flags=S size=0 tuid=?
uid=1052112 flags=S size=0 tuid=?
far side: 1971 messages, 0 recent
matching messages on far side against sync records
trying to re-approve uid validity of near side
Error: channel work-inbox, near side box INBOX: Unable to recover from
UIDVALIDITY change.
F: [ 7] Enter cancel_cmds
F: [ 7] Callback enter cancel_cmds
F: [ 7] Callback leave cancel_cmds
F: [ 7] Leave cancel_cmds
N: [ 8] Enter cancel_cmds
N: [ 8] Callback enter cancel_cmds
F: Enter free_store
F: Leave free_store
N: Enter free_store
N: Leave free_store
F: >>> 8 LOGOUT
N: [ 8] Callback leave cancel_cmds
N: [ 8] Leave cancel_cmds
F: [ 5] Callback leave load_box
F: * BYE Microsoft Exchange Server IMAP4 server signing off.
F: 8 OK LOGOUT completed.
Processed 1 box(es) in 1 channel(s),
pulled 0 new message(s) and 0 flag update(s),
expunged 0 message(s) from near side,
pushed 0 new message(s) and 0 flag update(s),
expunged 0 message(s) from far side.
ldm@pildm:~/Mail $
```
There are 1971 messages in my inbox, so that value we see above is
correct. I have no idea why this is failing. Any help would be much
appreciated.
My .mbsyncrc is pretty vanilla (just removing my address)
```
ldm@pildm:~ $ cat .mbsyncrc
#################################
######## Account work ###########
#################################
IMAPAccount work
Host outlook.office365.com
User xxxxx@yyyy.zzzzz
PassCmd /home/ldm/bin/oauth2ms
AuthMechs XOAUTH2
TLSType IMAPS
PipelineDepth 1
# Remote storage
IMAPStore work-remote
Account work
# Local storage
MaildirStore work-local
SubFolders Maildir++
Inbox ~/Mail/work/In
Channel work-inbox
Far :work-remote:"INBOX"
Near :work-local:INBOX
Create Both
Sync Pull Push New Flags
Expunge Both
Group work
Channel work-inbox
```
The only .uidvalidity file I have is created in that tree and contains
the following
```
ldm@pildm:~ $ cat Mail/work/In/.uidvalidity
1723661072
0
```
Help?
—
Laurent
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