Synchronization on backtest never stops

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Hello community,

when i want to backtest in MT5 against BTCUSD, the syn procedure never stops.

Have alredy checked out what happens when deleting base folder. No fix.
This is what the journal shows:

MD      0       01:53:31.771    Core 08 BTCUSD: history for 2025 year synchronized
DS      0       01:53:31.771    Core 08 BTCUSD: history synchronization completed [9122 Kb]
GQ      0       01:53:31.771    Core 08 BTCUSD: 8.91 Mb of history processed in 0:00:00.343
NH      0       01:53:31.792    Core 08 connection closed
EF      0       01:53:32.004    Core 04 connecting to 127.0.0.1:3003
GO      0       01:53:32.017    Core 12 connecting to 127.0.0.1:3011
NJ      0       01:53:32.017    Core 04 connected
QP      0       01:53:32.019    Core 04 authorized (agent build 5200)
HF      0       01:53:32.029    Core 12 connected
JD      0       01:53:32.031    Core 12 authorized (agent build 5200)
LL      0       01:53:32.032    Core 04 common synchronization completed
CE      0       01:53:32.034    Core 12 common synchronization completed
MM      0       01:53:32.042    Core 04 BTCUSD: history for 2023 year synchronized
RD      0       01:53:32.257    Core 04 BTCUSD: history for 2024 year synchronized
RL      0       01:53:32.386    Core 04 BTCUSD: history for 2025 year synchronized
OK      0       01:53:32.386    Core 04 BTCUSD: history synchronization completed [9122 Kb]
HI      0       01:53:32.386    Core 04 BTCUSD: 8.91 Mb of history processed in 0:00:00.343
QP      0       01:53:32.437    Core 04 connection closed
RN      0       01:53:32.439    Core 12 BTCUSD: history for 2023 year synchronized
DQ      0       01:53:32.650    Core 12 BTCUSD: history for 2024 year synchronized
IH      0       01:53:32.779    Core 12 BTCUSD: history for 2025 year synchronized
HO      0       01:53:32.779    Core 12 BTCUSD: history synchronization completed [9122 Kb]
DE      0       01:53:32.780    Core 12 BTCUSD: 8.91 Mb of history processed in 0:00:00.344
PO      0       01:53:32.806    Core 12 connection closed
CJ      0       01:53:33.014    Core 11 connecting to 127.0.0.1:3010
ES      0       01:53:33.027    Core 16 connecting to 127.0.0.1:3015
LF      0       01:53:33.027    Core 11 connected
OD      0       01:53:33.029    Core 11 authorized (agent build 5200)
PL      0       01:53:33.039    Core 18 connecting to 127.0.0.1:3017
PK      0       01:53:33.039    Core 16 connected
LR      0       01:53:33.041    Core 16 authorized (agent build 5200)
KG      0       01:53:33.050    Core 18 connected
DF      0       01:53:33.052    Core 18 authorized (agent build 5200)
FR      0       01:53:33.053    Core 11 common synchronization completed
OJ      0       01:53:33.053    Core 16 common synchronization completed
OS      0       01:53:33.055    Core 18 common synchronization completed
MK      0       01:53:33.062    Core 16 BTCUSD: history for 2023 year synchronized
NR      0       01:53:33.273    Core 16 BTCUSD: history for 2024 year synchronized
JJ      0       01:53:33.403    Core 16 BTCUSD: history for 2025 year synchronized
GQ      0       01:53:33.403    Core 16 BTCUSD: history synchronization completed [9122 Kb]
PG      0       01:53:33.404    Core 16 BTCUSD: 8.91 Mb of history processed in 0:00:00.344
NJ      0       01:53:33.412    Core 16 connection closed
ED      0       01:53:33.414    Core 11 BTCUSD: history for 2023 year synchronized
EO      0       01:53:33.626    Core 11 BTCUSD: history for 2024 year synchronized
IF      0       01:53:33.759    Core 11 BTCUSD: history for 2025 year synchronized
HE      0       01:53:33.759    Core 11 BTCUSD: history synchronization completed [9122 Kb]
DS      0       01:53:33.760    Core 11 BTCUSD: 8.91 Mb of history processed in 0:00:00.359
PI      0       01:53:33.783    Core 11 connection closed
HP      0       01:53:33.786    Core 18 BTCUSD: history for 2023 year synchronized
QK      0       01:53:33.999    Core 18 BTCUSD: history for 2024 year synchronized
DR      0       01:53:34.009    Core 02 connecting to 127.0.0.1:3001
LK      0       01:53:34.021    Core 19 connecting to 127.0.0.1:3018
EN      0       01:53:34.021    Core 02 connected
OO      0       01:53:34.024    Core 02 authorized (agent build 5200)
JK      0       01:53:34.033    Core 19 connected
LS      0       01:53:34.036    Core 19 authorized (agent build 5200)
DI      0       01:53:34.036    Core 02 common synchronization completed
PQ      0       01:53:34.038    Core 19 common synchronization completed
LN      0       01:53:34.136    Core 18 BTCUSD: history for 2025 year synchronized
EM      0       01:53:34.136    Core 18 BTCUSD: history synchronization completed [9122 Kb]
KK      0       01:53:34.136    Core 18 BTCUSD: 8.91 Mb of history processed in 0:00:00.359
CN      0       01:53:34.144    Core 18 connection closed
DH      0       01:53:34.146    Core 02 BTCUSD: history for 2023 year synchronized
NS      0       01:53:34.354    Core 02 BTCUSD: history for 2024 year synchronized
FJ      0       01:53:34.483    Core 02 BTCUSD: history for 2025 year synchronized
KN      0       01:53:34.483    Core 02 BTCUSD: history synchronization completed [9122 Kb]
MD      0       01:53:34.483    Core 02 BTCUSD: 8.91 Mb of history processed in 0:00:00.344
EM      0       01:53:34.507    Core 02 connection closed
MD      0       01:53:34.509    Core 19 BTCUSD: history for 2023 year synchronized
CO      0       01:53:34.720    Core 19 BTCUSD: history for 2024 year synchronized
DG      0       01:53:34.854    Core 19 BTCUSD: history for 2025 year synchronized
ER      0       01:53:34.854    Core 19 BTCUSD: history synchronization completed [9122 Kb]
DP      0       01:53:34.855    Core 19 BTCUSD: 8.91 Mb of history processed in 0:00:00.359
LI      0       01:53:34.863    Core 19 connection closed
IQ      0       01:53:35.003    Core 09 connecting to 127.0.0.1:3008
KN      0       01:53:35.015    Core 10 connecting to 127.0.0.1:3009
DI      0       01:53:35.015    Core 09 connected
GQ      0       01:53:35.017    Core 09 authorized (agent build 5200)
QK      0       01:53:35.026    Core 20 connecting to 127.0.0.1:3019
PN      0       01:53:35.026    Core 10 connected
PL      0       01:53:35.029    Core 10 authorized (agent build 5200)
PJ      0       01:53:35.038    Core 20 connected
HP      0       01:53:35.040    Core 20 authorized (agent build 5200)
LH      0       01:53:35.041    Core 10 common synchronization completed
LQ      0       01:53:35.041    Core 09 common synchronization completed
RI      0       01:53:35.044    Core 20 common synchronization completed
GF      0       01:53:35.051    Core 10 BTCUSD: history for 2023 year synchronized
KI      0       01:53:35.267    Core 10 BTCUSD: history for 2024 year synchronized
QP      0       01:53:35.404    Core 10 BTCUSD: history for 2025 year synchronized
HD      0       01:53:35.404    Core 10 BTCUSD: history synchronization completed [9122 Kb]
NR      0       01:53:35.404    Core 10 BTCUSD: 8.91 Mb of history processed in 0:00:00.359
EH      0       01:53:35.410    Tester  optimization finished, total passes 0
EL      0       01:53:35.410    Statistics      optimization done in 0 minutes 53 seconds
RD      0       01:53:35.410    Core 09 connection closed
KN      0       01:53:35.411    Core 10 connection closed
EK      0       01:53:35.412    Core 20 connection closed
LJ      3       01:53:35.413    Tester  stopped by user

I finally stopped it. BTUSD charts are fine in all time frames. 
How can i fix it?

Thank you for help.

 
chinaski:

Hello community,

when i want to backtest in MT5 against BTCUSD, the syn procedure never stops.

Have alredy checked out what happens when deleting base folder. No fix.
This is what the journal shows:

I finally stopped it. BTUSD charts are fine in all time frames. 
How can i fix it?

Thank you for help.

From what I had experienced, you need to delete the data you have & start again, I suggest a fast internet connection with good load of data
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