Issues with pairing phone with Exchange 2010 server, told reaching limit but not

Tim Palmer
Tim Palmer used Ask the Experts™
Exchange 2010 Mobile phone sync issue

"You have 10 phone partnerships out of the maximum allowed 10 partnerships. After you reach the maximum, you can't create additional partnerships until you delete existing ones from your account. To do so, sign in to Outlook Web App, click Options > Phone > Mobile Phones, and delete any unused partnerships."

I have checked this via OWA as advised, and via the Exchange 2010 Management Console, however there are only 3.

How can I fix this (also, I don't have access to my clients phone, so I'm hoping I can fix this server side)
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Hi Tim,

You can make several configuration in the server. You can change the limit, to increase to 20:

Get-ThrottlingPolicy | Set-ThrottlingPolicy –EASMaxDevices 20

Or you can try again to remove the partnership that you do not use. Check in ECP, right click in the mailbox user afected > managed mobile phones > choose device then click remove.

Tim PalmerLevel 3 Support Technician


Thanks Valentina,

I'll try and increase the limit (and confirm the limit), but according to ECP they only have 3 devices paired.

Hi Tim,

Ok perfect.

You will tell me if the issue is solved.

You can verify with command:
Get-ActiveSyncDevice –Mailbox “alias” |Format-List DeviceId, DeviceType, DeviceModel, DeviceOS, FriendlyName, Name

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Tim PalmerLevel 3 Support Technician


Heres the results of just a Get-ThrottlingPolicy

[PS] C:\Windows\system32>Get-ThrottlingPolicy

RunspaceId                                : 564623f9-5969-4368-9057-9fdbb21c6d23
IsDefault                                 : True
AnonymousMaxConcurrency                   : 1
AnonymousPercentTimeInAD                  :
AnonymousPercentTimeInCAS                 :
AnonymousPercentTimeInMailboxRPC          :
EASMaxConcurrency                         : 10
EASPercentTimeInAD                        :
EASPercentTimeInCAS                       :
EASPercentTimeInMailboxRPC                :
EASMaxDevices                             : 10
EASMaxDeviceDeletesPerMonth               :
EWSMaxConcurrency                         : 10
EWSPercentTimeInAD                        : 50
EWSPercentTimeInCAS                       : 90
EWSPercentTimeInMailboxRPC                : 60
EWSMaxSubscriptions                       : 5000
EWSFastSearchTimeoutInSeconds             : 60
EWSFindCountLimit                         : 1000
IMAPMaxConcurrency                        :
IMAPPercentTimeInAD                       :
IMAPPercentTimeInCAS                      :
IMAPPercentTimeInMailboxRPC               :
OWAMaxConcurrency                         : 5
OWAPercentTimeInAD                        : 30
OWAPercentTimeInCAS                       : 150
OWAPercentTimeInMailboxRPC                : 150
POPMaxConcurrency                         : 20
POPPercentTimeInAD                        :
POPPercentTimeInCAS                       :
POPPercentTimeInMailboxRPC                :
PowerShellMaxConcurrency                  : 18
PowerShellMaxTenantConcurrency            :
PowerShellMaxCmdlets                      :
PowerShellMaxCmdletsTimePeriod            :
ExchangeMaxCmdlets                        :
PowerShellMaxCmdletQueueDepth             :
PowerShellMaxDestructiveCmdlets           :
PowerShellMaxDestructiveCmdletsTimePeriod :
RCAMaxConcurrency                         : 20
RCAPercentTimeInAD                        : 5
RCAPercentTimeInCAS                       : 205
RCAPercentTimeInMailboxRPC                : 200
CPAMaxConcurrency                         : 20
CPAPercentTimeInCAS                       : 205
CPAPercentTimeInMailboxRPC                : 200
MessageRateLimit                          :
RecipientRateLimit                        :
ForwardeeLimit                            :
CPUStartPercent                           : 75
AdminDisplayName                          :
ExchangeVersion                           : 0.10 (
Name                                      : DefaultThrottlingPolicy_97d3ced9-4faf-4343-b2dc-773443ab5d04
DistinguishedName                         : CN=DefaultThrottlingPolicy_97d3ced9-4faf-4343-b2dc-773443ab5d04,CN=Global S
                                            ettings,CN=First Organization,CN=Microsoft Exchange,CN=Services,CN=Configur
Identity                                  : DefaultThrottlingPolicy_97d3ced9-4faf-4343-b2dc-773443ab5d04
Guid                                      : 9b8e7256-fc66-45c4-9338-566d309ebb41
ObjectCategory                            : <domain>.local/Configuration/Schema/ms-Exch-Throttling-Policy
ObjectClass                               : {top, msExchGenericPolicy, msExchThrottlingPolicy}
WhenChanged                               : 20/12/2012 1:26:09 PM
WhenCreated                               : 20/12/2012 1:26:09 PM
WhenChangedUTC                            : 20/12/2012 2:26:09 AM
WhenCreatedUTC                            : 20/12/2012 2:26:09 AM
OrganizationId                            :
OriginatingServer                         : <server>.<domain>.local
IsValid                                   : True
Tim PalmerLevel 3 Support Technician


And here is the result of the second command - no where near the limit.

[PS] C:\Windows\system32>Get-ActiveSyncDevice -Mailbox "ben" |Format-List DeviceId, DeviceType, DeviceModel, DeviceOS, F
riendlyName, Name

DeviceId     : CVVDP0MFQP5MD7H83U1LQBI6U4
DeviceType   : iPad
DeviceModel  : iPad6C8
DeviceOS     : iOS 10.3.2 14F89
FriendlyName : iPad Pro
Name         : iPad§CVVDP0MFQP5MD7H83U1LQBI6U4

DeviceId     : ATU15C36CH3UF4U8NTS3RHAHVS
DeviceType   : iPhone
DeviceModel  : iPhone10C3
DeviceOS     : iOS 11.3.1 15E302
FriendlyName : iPhone X
Name         : iPhone§ATU15C36CH3UF4U8NTS3RHAHVS

DeviceId     : 7I0INOJ33T3DJ2KBIRPU3G6E6G
DeviceType   : iPhone
DeviceModel  : iPhone9C4
DeviceOS     : iOS 11.3.1 15E302
FriendlyName : iPhone 7 Plus
Name         : iPhone§7I0INOJ33T3DJ2KBIRPU3G6E6G

Hi Tim,

Ok it is quite strange...

The command show the limit is 10.

Try to increase the value: Get-ThrottlingPolicy | Set-ThrottlingPolicy –EASMaxDevices 20

Tim PalmerLevel 3 Support Technician


OK done, I've asked the client to try again and I'll update when I hear back from him.
Thank you for your quick responses Valentina!

Ok perfect Tim
Tim PalmerLevel 3 Support Technician


I'm not 100% sure if increasing the capacity to 20 fixed it or not, because it's still only showing 3 items paired with him, but he's advised it's working.

I suspect he may have followed the steps that he was told to after raising the help ticket with us.

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